EUGENE — A 34-year-old man suspected as a gang leader who’d been released from prison with orders to stay out of Lane County was spotted Thursday wearing body armor and “lingering around” a Eugene bank office, police said.

Officers tossed a “flash-bang” percussion grenade to stun him and then, as the alarms of nearby cars were going off, moved in to take him into custody.

The Register-Guard reports that Beau Heleman Flynn is suspected by police of leading a prison gang.

“When he’s in prison, he’s the top dog,” said Eugene police Sgt. Scott McKee. “When he’s out … we become worried about what he might do.”