Overnight a gunman opened fire at a "college country night" at a bar in Thousand Oaks, California killing at least a dozen people.

Reports say that hundreds of people were inside the Borderline Bar & Grill when the gunman, wearing all black, started shooting around 11:20 P.M. local time. Deputies and highway patrolmen responded within minutes of receiving the shots fired calls.

Sheriff's Sgt. Ron Helus was shot multiple times and died at a local hospital. The veteran of 29 years had planned to retire soon.

Witnesses say that a tall man with a hood and partial concealed face first shot a bouncer, then used smoke bombs and opened fire on the bar. Police say the shooter was found dead in the bar and its unclear how he died.

Read more at Ventura County Star.