A crash on Interstate 91 North in New Haven has cleared.
Little information was immediately available, but state police said four cars might be involved and there might be injuries.
The right lane was closed, but traffic is moving again.
An alert from the state Department of Transportation says the crash is between exits 5 and 6 and the highway is congested between exits 2 and 6.
An NBC Connecticut crew is on the way to the scene.