Former Olympian Conrad Mainwaring has pleaded guilty to molesting boys at a camp in Berkshire County.

The former track athlete admitted in Berkshire Superior Court on Thursday that he sexually abused nine boys while working as a camp counselor in the town of Becket back in the 1970s.

Mainwaring, now 72, sat in a wheelchair wearing an orange jail uniform and a mask. Several of his victims were present in the courtroom and delivered impact statements.

Mainwaring went on to become track coach at Syracuse University and at a college out on the West Coast. There may have been more than 400 athletes abused.

Mainwaring pleaded guilty to multiple counts of indecent assault and battery. He will face a minimum of 11 years in prison when sentenced.

Berkshire County Timothy Shugrue issued a statement after the ruling.

“I have been humbled by the bravery of the survivors in this case. They have carried the burden of abuse without justice since the 1970s.  Without the survivors, their families, and the dedication of ESPN’s investigative journalists we would not have reached this successful conclusion today. On behalf of my office, I thank them for their participation and dedication during this process,” he said.