Update: Decatur police say the scene has been cleared, and all lanes are back open.
The Decatur Police Department is responding to a collision between a vehicle and a motorcycle on Hwy. 31 at Mill Road.
There have been injuries, said Emme Long, police spokeswoman. No other details have been provided.
At 12:53 p.m., Long said northbound lanes will be blocked for a minimum of two hours.