A rollover crash on Interstate 5 in downtown Seattle during the Thursday morning commute is being investigated as a hit and run. One driver was sent to the hospital.

It happened at 4:48 a.m. in the southbound lanes near Madison Street.

The Washington State Patrol says Chrysler Town and Country minivan made a lane change ran into the back of the semi. The minivan then hit the median and came to rest on its side. The semi kept going.

The minivan driver was taken to Harborview Medical Center with a broken arm and other possible injuries.

The semi likely has some damage due to the collision, but no further description was immediately given.

Witnesses are asked to call the state patrol tip line at (425) 401-7741.