A Florida man who kept playing videogames after pinning his 6-year-old son to the couch on Christmas Eve has pleaded guilty to killing the boy.

The Herald Tribune (http://goo.gl/gJsuWp) reports that 31-year-old James Dearman pleaded guilty Thursday to aggravated manslaughter of a child in the death of his son Jimmy. He faces up to 20 years in prison at a July 28 hearing.

A sheriff's report says Dearman used his weight to pin the boy to the couch where he was playing video games with his girlfriend, 22-year-old Ashley Cole. The couple eventually realized the boy wasn't breathing and called 911. Cole also pleaded guilty to aggravated manslaughter of a child.

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Information from: Sarasota (Fla.) Herald-Tribune, http://www.heraldtribune.com