BOSTON -- The Boston Police Department has wrapped up its investigation into the death of a young man who was taken into custody after the Celtics won the NBA title in June 2008.

Police said the department has been cleared of any wrongdoing in the death of 22-year-old David Woodman, but officials admitted that some mistakes were made.

Woodman was placed into police custody on June 18, 2008, during championship celebrations after he was arrested on a public drinking charge. He stopped breathing while in custody and died 11 days later. His family has contended that their son's death was contributed to by the actions of the police officers.

"I believe the officers in no way could have anticipated or prevented Mr. Woodman's death," Boston police Commissioner Ed Davis said.

The investigation was led by former U.S. Attorney Donald Stern. The report found police did not monitor Woodman's condition after he was handcuffed. It also took four officers to subdue and arrest him, and none of the officers filed a report about what happened.

The official report about the arrest was written by a lieutenant who was not even at the scene.

"It's not clear who was kind of in charge of Mr. Woodman as he lay on the ground. Although, again, we don’t point to that as contributing or causing the death because at the first sign the officers realized he was in medical distress, they jumped into action," Stern said. "They flagged down ambulances."

The department said there was a gap in accountability during confusion at the scene, but they insist it did not contribute to the college student's death.

"Clearly this morphed from a routine arrest for disorderedly conduct and drunkenness to a medical emergency and everyone recognized that and did what they could," Davis said.

Davis said that the department feels terrible about what happened. Woodman's parents responded to the report with anger.

"In my opinion, those nine officers -- the ones who handled him and the ones who witnessed -- are responsible for my son's death," said Woodman's mother, Cathy Woodman.

"Maybe they wanted to give him some street justice. Then they are standing there, and some one says, 'crap. He's not doing anything. We have to revive him or we are in deep trouble," Woodman's father, Jeffrey, said.