Former Olympic ice skater Tonya Harding has pleaded not guilty to charges that she threw a hubcap at her boyfriend and punched him in the face.

Harding, 29, appeared in court Thursday morning in Camas, Washington.

In a 911 call released Wednesday by the police, a male voice says: "I want to find out the rules, if we'd both go to jail or not, because my girlfriend is beating the .... out of me."

Later a female voice says, "I punched him in the face because he came after me, he put me to the ground."

Police say both Darren Silver, Harding's live-in boyfriend and Harding appeared intoxicated. They began fighting Tuesday night in a barn they use as a garage behind their house.

Harding gained international attention in 1994 when she pleaded guilty to covering up for her former husband and friends. They had planned to injure skater Nancy Kerrigan as she practised for the national figure skating championship.

Harding eventually was banned from amateur skating for life because of her role in the attack. She now teaches figure skating in Portland, Oregon.