Police Chief Thomas Smith appointed a new head of St. Paul's troubled crime lab on Thursday, Minnesota Public Radio said. Senior Commander Colleen Luna will lead the lab's reorganization, Smith said.

Alleged gang threats made against police officers in St. Paul and Minneapolis stemming from the shooting death of alleged Twin Cities gang leader Victor Gaddy have left citizens concerned. To calm nerves, officers from the St. Paul Police Department held a community meeting Thursday night, which drew about 100 people.

Conspiracy theorists: rest easy. Those black helicopters can be explained. U.S. Special Operations Command has been in St. Paul for "routine urban-environment training," portions of which include St. Paul police, a spokesman says. Black Hawks and smaller Hughes 500s might be visible to some residents between 7 p.m. and midnight until Sept. 1. Exact times and locations are not being disclosed.

The Chicago-based Gangster Disciples gang is furious that St. Paul police last week killed Victor Gaddy, a leader of the Twin Cities chapter of the gang, KSTP reports. So the gang has threatened to kill a Minneapolis or St. Paul police officer in retaliation. Police have heard separate reports about the hit, and now all 1,400 officers in the two cities are on "high alert," KSTP says.

They were involved in street warfare with rival gangs.

Officers were called to the city's Frogtown neighborhood early Sunday morning after a bear was seen roaming the area. WCCO reports the Department of Natural Resources was contacted and advised police to shoot the black bear versus tranquilizing.