Two people were killed overnight Saturday when a vehicle collided with a Cedar Rapids Police vehicle doing traffic control for a previous accident.

The accident happened in the southbound lanes of I-380 close to the 1st Avenue West exit. According to the Cedar Rapids Police Department, the police vehicle was struck from behind. Two people were in the vehicle that struck the Cedar Rapids Police vehicle. They were both pronounced dead at the scene. The officers were treated at local hospitals, and are being monitored. KCRG reports the accident happened around 3 a.m.

The names of those involved have not been released and the investigation continues.

The southbound lanes of I-380 reopened at approximately 9:40 a.m.

[via Cedar Rapids Police and KCRG]