According to the Windsor Locks Police Department, the man exited the vehicle on Sunday, Jan. 24, around 1 p.m., while on Dexter Coffin Bridge and jumped into the river.
The police department responded as did fire and other agencies to search for the victim.
As of Monday, Jan. 24, a body has not been recovered.
The identity of the victim is unknown at this time.
Click here to follow Daily Voice Stamford and receive free news updates.