A body found near Lincoln, Mass., has been identified as Stephen "Stippo" Rakes, an upcoming key witness in the trial of notorious South Boston gangster James "Whitey" Bulger.
A law enforcement official confirming Rakes death to USA TODAY says authorities are investigating that he may have died of natural causes.
The official said there is "no obvious sign'' that he was murdered.
ABC News sayspolice and federal law enforcement sources confirmed that the body is that of Stephen "Stippo" Rakes, who planned to testify that he was forced at gunpoint to turn over his liquor store to Bulger 29 years ago.
ABC news says police have told the Rakes family that the death appeared to be a suicide, but that no phone or wallet was found on the body.
A close friend of Rakes, Steve Davis, tells ABC News, however, that he would not have killed himself and "was looking forward to taking the stand." Davis said Rakes had planned to deliver a "big bombshell" on the witness stand.
Rakes has been attending the federal trial in South Boston regularly over the past six weeks, and was on the witness list to testify against the 83-year-old Bulger.
ABC says that Rakes was a particularly angry and determined victim of Bulger's gangland tactics.
He was apparently supposed to testify that Bulger and a gangland associate Stephen "The Rifleman" Flemmi threatened his daughter at gunpoint and forced him to turn over his South Boston liquor store. The building later became Bulger's headquarters.
Bulger, a much-feared South Boston gangster for decades, fled the city in 1994 ahead of his arrest. He was captured in California two years ago after 16 years on the run.
Bulger has pleaded not guilty to 48 charges, including 19 counts of murder, extortion, money laundering, obstruction of justice, perjury, narcotics distribution, and weapons violations.