CROMWELL, Conn. (WTNH) — A crash involving a box truck Monday caused heavy traffic delays on Route 9 in Cromwell.

State police said the crash happened just before 11 a.m. on the northbound side of the highway near Exit 27.

The right lane of Route 9 North and the left lane of Route 9 South were closed for the investigation.

At least one person was taken to a hospital for unknown injuries, state police said.

Stay with News 8 for updates.