Using DNA tests, investigators linked a Lorton Correctional Complex inmate to the June slaying of community activist Dennis Dolinger and charged him with murder, according to court documents.

Raymond Jenkins, 38, who was serving a sentence for a burglary in the District, was arraigned yesterday in D.C. Superior Court in the slaying on June 4. Dolinger, 51, an outspoken advisory neighborhood commissioner and the founder of an Orange Hat patrol in his Capitol Hill neighborhood, was stabbed repeatedly in the head in his home in the 1500 block of Potomac Avenue SE. Police said at the time that there was no sign of forced entry.

According to an affidavit for Jenkins's arrest, blood samples from the scene of the slaying were analyzed by the FBI laboratory and the Virginia Division of Forensic Science, which identified Dolinger's blood and that of a man identified as Robert P. Garrett.

Investigators determined that Garrett was an alias used by Jenkins, of Arlington, the affidavit said. In November, while Jenkins was in custody on the burglary charge, authorities took a sample of his blood to confirm the DNA match.

A witness told investigators in November that he saw Jenkins a day after the killing with more than $1,000, a diamond ring and other jewelry reported missing from Dolinger's home, the affidavit said.

Jenkins was arrested on a second-degree burglary charge in July, weeks after Dolinger's death.

Six days after the slaying, Steven Craig Watson, of the 1500 block of King Street in Alexandria, was charged in the slaying after Alexandria detectives found Dolinger's debit card and other pieces of identification in Watson's apartment. Watson allegedly used Dolinger's debit card at a hair salon in Old Town Alexandria two days after the slaying.

But Watson was freed from jail last month and the murder charge against him was dismissed after authorities determined that his DNA did not match blood found in Dolinger's house.

As an activist, Dolinger's primary passion was chasing crime from his neighborhood, friends said, and he fiercely challenged authorities to clean up nuisance properties. He had retired from his position as a budget analyst for Metro just two weeks before he was killed. His memorial service drew 150 people, including Mayor Anthony A. Williams (D), former mayor Marion Barry, Del. Eleanor Holmes Norton (D-D.C.) and D.C. Council member Sharon Ambrose (D-Ward 6).