GRAPHIC CONTENT warning: Some of the details in this story are disturbing.

CARLISLE, Pa. -- A Pennsylvania man has admitted he sexually assaulted a six-year-old boy after Canadian authorities intercepted an Internet broadcast of him raping the child.

U.S. authorities later discovered 10 other recorded assaults of the boy. reports 20-year-old William Byers Augusta pleaded guilty in Carlisle on Tuesday to charges including rape of a child.

Prosecutors say Canadian authorities intercepted a broadcast of Byers Augusta sexually assaulting the boy in July 2015.

Investigators found videos showing Byers Augusta assaulting the child, including one of him and 62-year-old Ira Task simultaneously sexually assaulting the child.

Authorities say Task didn't wear protection despite knowing he had been HIV positive since 1994.

Task was sentenced in June to 17 1/2 to 40 years in prison.

Byers Augusta's sentencing is scheduled for January.