He was serving life in prison for a murder in 2002. Now, he has allegedly admitted to being a serial killer.

A man already in prison for the rest of his life for one murder has been charged for two cold-case homicides along the east coast, officials said.

Charles Helem, 52, was convicted of the 2002 murder of Patricia Bentley in Chantilly, Virginia and sentenced to life in prison. Now, he has been indicted in connection to two other murders, officials announced on Jan. 19.

The Prince George County police in Maryland charged him in connection to the 2002 killing of Jennifer Landry, 19. On Aug. 15, 2002, Landry was found dead in the woods near Mount Rainier, Maryland.

An autopsy stated she died of asphyxia and cutting wounds to the neck, according to Prince George County police.

While she was found in 2002, Landry wasn’t identified until 2005 through a fingerprint match, police said.

In 2010, Helem sent a letter to police about Landry’s murder but then refused an interview. He sent another letter in 2017 and again refused to speak, Prince George County police stated. In 2021, he agreed to an interview and confessed.

Police said Helem said he picked up Landry while he was soliciting sex for money and then killed her.

Helem also provided information about an unsolved murder in Fairfax County, Virginia, police said.

The other murder case Helem was charged with this week was in connection to the death of Eige Sober Adler, 37, in Virginia. She was found dead in a motel parking lot on Sept. 8, 1987, according to Fairfax County police.

The case was investigated and went cold until the new information in 2021.

Fairfax County Police Chief Kevin Davis said at a press conference streamed on social media that Adler’s parents died without knowing who killed their daughter.

“We hope this indictment brings some sense of closure to her surviving family members and friends,” Davis said.