A man accused of shooting and wounding two eighth-graders outside their middle school pleaded not guilty Monday by reason of insanity.

Bruco Strong Eagle Eastwood, 32, entered his plea in Jefferson County District Court, and was ordered to undergo a mental evaluation at the state Mental Health Institute in Pueblo. The evaluation would take at least 45 days.

Eastwood faces 15 charges, including attempted first-degree murder in the Feb. 23 shootings outside Deer Creek Middle School in south suburban Denver. Teachers tackled and restrained Eastwood until deputies arrived.

He faces decades in prison if convicted of the charges or an indefinite amount of time in a mental health institute if found not guilty by reason of insanity.

Before Eastwood accepted the plea, District Judge Christopher Munch told him that "commitment could be the rest of your life." Eastwood nodded that he understood.

Prosecutors are seeking access to observations of Eastwood's actions in jail and conversations between Eastwood and a psychologist made on a jail phone.

Chief Deputy District Attorney Steve Jensen said during Monday's court hearing that because Eastwood is making his mental health an issue in the case, Eastwood's private medical records are no longer private.