Police have found human remains that could belong to gangster fugitive Donald Eugene Webb in the backyard of his ex-wife's home, where the hideaway was believed to have been located.
Officials believe Webb was in Pennsylvania at the time to check out a burglary target as he was a "career criminal" who burglarized jewelry stores.
Webb's remains were found buried in the back of the property located at 28 Maplecrest Drive, North Dartmouth.
The remains might be Webb, who is a long time fugitive wanted for the murder of Adams.
There was a $100,000 reward for information leading to his capture.
"For nearly 37 years, the family of Chief Adams, and the citizens of Saxonburg have been awaiting news of Donald Eugene Webb's whereabouts", said Harold H. Shaw, special agent in charge of the FBI's Boston division, in the statement.
Webb passed away about 17 years ago, in 1999, investigators learned.
Webb is accused of beating and shooting Chief Adams during a routine traffic stop.More news: Former US President Carter hospitalized in Canada
"What appear to be human remains have been discovered", District Attorney Thomas Quinn said at a news conference Thursday evening.
The state medical examiner's office identified the remains as belonging to Donald Eugene Webb, who went missing after allegedly gunning down Chief Gregory Adams duing a traffic stop in Saxonburg in December 1980, the Federal Bureau of Investigation said in a statement. "I'm angry, because I gave her immunity".
Kristen Setera, a spokeswoman for the FBI's Boston division, said "until positive identification has been made, no further comment will be made at this time".
Adams was 31 when the incident happened on December 4, 1980.
Jones said she wants to know how Donald Webb managed to evade arrest after her husband's murder. The Bristol DA's office says it's not ready to say if the remains found are Webb's. They returned to the property Thursday. "I mean, what is wrong with that family?"
"The biggest question in the history of Saxonburg has been answered", said Saxonburg Police Chief Joseph Beachem in a statement.
They said they'll issue another statement after an autopsy is completed.
That discovery, officials said, could be connected to a decades-old case.