A serial killer who sketched portraits of his victims is considered to be the most prolific murderer in US history, targeting mainly “marginalised and vulnerable women” across a 35-year period.

Samuel Little confessed to murdering nearly 100 people across the US between 1970 and 2005, with FBI analysts believing the nomadic killer’s claims are credible.

Police have verified 50 of the former boxer’s 93 confessions, while the others are awaiting confirmation.

Most of the 79-year-old’s victims were black women and were believed to have been drug users, sex workers or others living on the fringes of society.

This meant their deaths were never investigated by the FBI.

The serial killer had been serving life since 2012 for the murders of three women when he confessed, with portraits he sketched of his victims emerging earlier this year.

The FBI posted a page on its website on Sunday “seeking assistance connecting victims to Samuel Little’s confessions”.

The bureau added that Little “remembers his victims and the killings in great detail” but is “less reliable, however, when it comes to remembering dates”.

Here we take a look at some of the serial killer’s confessions that are yet to have been confirmed.

Miami, Florida – 1971 to 1972

Little said that during this period he met a “good-looking” 18 to 19-year-old transgender.

In a video confession he described the victim as a “black male dressed up as a female”.

He added that the victim wanted to be known as Mary Ann or Marianne.

Little said they met at a bar known as The Pool or Pool Palace near 17th Avenue in Miami.

The murderer says he later drove the victim down Highway 27 before killing her on a driveway, possibly near a sugarcane field.

He said he later left the body in thick muddy water.

Describing how he disposed of the body, Little said in his video confession: “So, I got out of the car, pulled her out and dragged her into the growth back there.

“And pulled her deeper into… there’s a path, a little path, that went in somewhere, I don’t know where it led to, but it was running deeper into the undergrowth.

“And we ran into some water running, but before we got to the water the earth was mushy.

“I turned her loose and she fell into it face down.”

New Orleans, Louisiana – 1982

Little said he met a “honey-coloured” black woman, between 30 to 40-years-old, in New Orleans in 1982. She told him she lived with her mother.

The killer claimed they had met in a club where she was attending a birthday party with a group of her friends and two of her sisters.

Little said he left with the woman in his Lincoln Continental Mark III, before they drove down a dirt road along a canal that was being dredged.

He says they then got out of the car before he killed her and left the body there.

Covington, Kentucky – 1984

Little said that he met a 25-year-old white woman outside a strip club in 1984.

He described her as having short blonde hair, blue eyes and with a “hippie appearance”. She asked for a lift to Miami, where her mother lived.

Little says he strangled the woman in the backseat of his car before leaving her body on the top of a hill.

Little Rock, Arkansas – 1992 to 1994

The serial killer said he met a 24-year-old black woman in Little Rock during this period. Her name was Ruth and her mother lived in North Little Rock.

Little said that it was cold and possibly snowing, and he ended up staying with her for around three days.

The murderer told investigators he later drove her down a dirt road and strangled her to death, before placing her body on a pile of branches and old cornstalk in a cornfield.

Las Vegas, Nevada – 1993

Little was driving a Cadillac to Las Vegas when he met a black woman who was around 40-years-old.

He confessed to taking her to a motel room where he strangled her to death.

Little said he then put her body in the boot of his car and drove her to the outskirts of Las Vegas, before rolling the woman downing a steep slope on a remote road.

He says it is likely her body was never found.

Little’s nomadic lifestyle, where he moved from place to place targeting vulnerable people, meant it took years for police to catch him.

The FBI has said it is working with police to verify the remaining victims from his confessions.

The bureau has also released a map marking the locations of his attacks.

The exact timing of when Little drew the pictures isn’t known, but the FBI said they were based on his memories of some of his victims.

The FBI released videos in which Little describes in detail the women he claims to have murdered.

Little is expected to die in a prison in Texas.

Full list of unconfirmed confessions as set out by the FBI

Phoenix, Arizona

• Unmatched Confession: Hispanic female in her 40s. Killed in 1988 or 1996. Victim possibly from Phoenix
• Unmatched Confession: White female killed in 1997. Victim possibly called “Ann”

North Little Rock, Arkansas

• Unmatched Confession: Black female killed in 1992 or 1993

Pine Bluff, Arkansas

• Unmatched Confession: Black female killed between 1990 and 1997

West Memphis, Arkansas

• Confession Matched to a Jane Doe: Black female between 28-29 years old killed in 1984. Victim picked up in Memphis, Tennessee

San Bernardino, California

• Unmatched Confession: Black female between the ages of 18-23 killed in 19847

Los Angeles, California

• Unmatched Confession: Black female killed in 1987
• Unmatched Confession: Black female killed in 1987
• Unmatched Confession: Black female, age 19, killed in 1987
• Unmatched Confession: Black female, age 50, killed in 1987. Victim possibly called “Granny”
• Unmatched Confession: Black female between 22-23 years old killed in 1987
• Unmatched Confession: Black female between 26-27 years old killed in 1987
• Unmatched Confession: Black female between 40-45 years old killed in 1990 or 1991. Victim possibly called “Alice”
• Unmatched Confession: Black female between 20-22 years old killed in 1991 or 1992. Victim possibly from San Francisco
• Unmatched Confession: Black female killed in 1992
• Unmatched Confession: Black female killed in 1992 or 1993
• Unmatched Confession: Hispanic female between 24-25 years old killed in 1992 or 1993. Victim possibly from Phoenix
• Unmatched Confession: Black female between 23-25 years old killed in 1996
• Unmatched Confession: Black female between 23-24 years old killed in 1996. Victim possibly called “T-Money”
• Unmatched Confession: White female between 23-25 years old killed in 1996
• Unmatched Confession: Black female age 25 killed in 1996

Homestead, Florida

• :: Unmatched Confession: White female killed in 1970 or 1971

Miami, Florida

• Unmatched Confession: Black female, age 22, killed in 1971.Victim possibly called “Linda”
• Unmatched Confession: Black male, age 18, killed in 1971 or 1972. Victim possibly called “Mary Ann” or “Marianne”
• Unmatched Confession: Black female, age 28, killed in 1971 or 1972. Victim possibly worked on Homestead Air Force Base
• Unmatched Confession: Black female between 23-24 years old killed in the mid-1970s. Victim possibly called “Emily.” Victim possibly worked at the University of Miami

Kendall, Florida

• Unmatched Confession: White female age 45 killed in 1973. Victim possibly called “Sarah.” Victim possibly from Massachusetts

Fort Myers, Florida

• Unmatched Confession: Black female killed in 1984

Tampa Bay, Florida

• Unmatched Confession: Black female killed in 1984

Plant City, Florida

• Unmatched Confession: Black female killed in 1977 or 1978. Met victim in Clearwater, Florida

Savannah, Georgia

• Unmatched Confession: Black female between 22-23 years old killed in 1974
• Unmatched Confession: Black female age 23 killed in 1984

Atlanta, Georgia

• Unmatched Confession: Black female between 35-40 years old killed in 1981
• Unmatched Confession: White female, age 26, killed in 1983 or 1984. Victim possibly from Griffith, Georgia
• Unmatched Confession: Black female between 23-25 years old killed in 1984. Victim possibly a college student

Macon, Georgia

• Confession Matched to a Jane Doe: Black female between 30-40 years old killed in 1977

Dade County, Georgia

• Confession Matched to a Jane Doe: Black female between 25-30 years old killed in 1980 or 1981. Met the victim in Chattanooga, Tennessee

Granite City, Illinois

• Unmatched Confession: Black female, age 26, killed between 1976 and 1979. Met victim in St. Louis, Missouri. Victim possibly called “Jo”

East St. Louis, Illinois

• Unmatched Confession: Black female killed between 1976 and 1979. Met victim in St Louis, Missouri

Covington, Kentucky

• Unmatched Confession: White female killed in 1984. Met victim in Columbus, Ohio. Body disposed of somewhere in Northern Kentucky (city unspecified)

New Orleans, Louisiana

• Unmatched Confession: Black female killed in 1973. Victim possibly called “Sarah.” Victim possibly worked at a restaurant in New Orleans
• Unmatched Confession: White female killed in 1982

Monroe, Louisiana

• Unmatched Confession: Black female, age 24, killed between 1987 and the early 1990s

Prince George’s County, Maryland

• Confession Matched to a Jane Doe: White female between 20-25 years old killed in 1972. Victim possibly from Massachusetts

Gulfport, Mississippi

• Unmatched Confession: Black female, age 22, killed between 1980 and 1984

Pascagoula, Mississippi

• Confession Matched to a Jane Doe: Black female between 35-45 years old killed in 1977. Met the victim in Gulfport, Mississippi. Victim possibly from Pascagoula. Victim possibly worked at Ingalls Shipyard

Las Vegas, Nevada

• Unmatched Confession: Black female, age 40, killed in 1993

Cincinnati, Ohio

• Unmatched Confession: Black female killed in 1974

Charleston, South Carolina

• Unmatched Confession: Black female, age 28, killed between 1977 and 1982

Knoxville, Tennessee

• Unmatched Confession: Black female, age 25, killed in 1975

Wichita Falls, Texas

• Unmatched Confession: Black female killed in 1976 or 1977. Body disposed of somewhere outside of Wichita Falls (city unspecified)

Houston, Texas

• Unmatched Confession: Black female between 25-28 years old killed between 1976 and 1979 or in 1993

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