Portland Police Officer Dane Reister should lose his job for suddenly firing a beanbag shotgun that he mistakenly loaded with lethal rounds at a man obviously suffering from a mental illness, a federal lawsuit filed Thursday says.

The attorney for William Kyle Monroe, wounded by Reister on June 30, 2011, accuses the officer, Police Chief Mike Reese and the city of Portland of violating Monroe's civil rights through false arrest, assault and negligence.

 The suit seeks more than $11 million in damages.

Monroe, who was 20 at the time and diagnosed with bipolar disorder, narrowly escaped bleeding to death only because OHSU Hospital was near the shooting scene, but he's permanently disabled, his lawyer said.