Wisconsin Off-Duty Deputy Sheriff Kills 6

From the AP:

A local law enforcement employee went on a shooting rampage early Sunday in remote northern Wisconsin, killing at least five people before authorities fatally shot him, officials said.

A dispatcher for the State Patrol who declined to give his full name as a matter of department practice said the suspect is an employee of the Forest County Sheriff's Department and a part-time officer for the Crandon Police Department.

[...]"He was brought down by a sniper," Bradley said.

CNN:

The victims were at a house party together. Residents say one of those killed is or was the shooter's girlfriend.