Council Bluffs police were called out to the area of South 13th and 6th Avenue around 4 a.m. Wednesday. When they arrived on scene, they found a man lying on the curb with a bicycle.
Police identified the bicyclist as Melvin Brown, 57, of Council Bluffs.
After an initial investigation, police said the evidence is consistent with the bicycle being hit from behind by a vehicle while it was traveling south.
The injured man was taken to CHI Creighton with head trauma.
Anyone with information on this crash is urged to call the Council Bluffs Crime Stoppers at: (712)328-7867.