Police say an AC unit fell of the back of a truck and caused a chain reaction crash on the North Freeway.
Six vehicles were involved in the crash around 11 p.m. Monday.
Officials say a driver swerved to avoid the AC unit and side swiped a Houston police captain's car before hitting another driver. That driver slammed on his brakes, which caused two other drivers to slam into the back of that car.
One person was taken to the hospital with minor injuries.