A northwestern Pennsylvania man has pleaded guilty to intentionally releasing thousands of gallons of oil into two streams because he was upset with his former employer.

Twenty-two-year-old Christopher Horton, of Bradford, pleaded guilty Monday. He faces at least three years in jail, but a McKean County judge may allow him to serve that sentence in a boot camp.

Last week, Horton's father, Andrew, pleaded guilty to his role in the August spill in the Allegheny National Forest.

McKean County prosecutors say Christopher Horton damaged oil storage tanks owned by his former employer, Snyder Brothers. The spill killed an unknown number of fish, reptiles and amphibians.

The Hortons say they had been drinking and didn't anticipate the extent of the damage.