TULSA, OK -- Tulsa Police are asking for the public's help in finding a vehicle, they believe struck a bicyclist Friday morning in the 3100 block of North Cincinnati. 

Police say the bicyclist was northbound, when a vehicle, also northbound, came up behind, striking the cyclist at about 7:12 a.m. 

The vehicle apparently then drove away. 

EMSA says the 56-year-old man was transported to a Tulsa hospital in critical condition. 

At this point, police do not have a good description of the vehicle that struck the cyclist and are asking for the public's help.

Anyone with information about the accident or who may have witnessed the accident to call Crime Stoppers at 596-COPS.