EL PASO, Texas -

Oct. 18, 2013 afternoon update:  The man who crashed into the police unit is in critical condition. His name has not been released.

Previous story: A man is hospitalized after he allegedly crashed his car into the back end of an El Paso Police Department patrol car overnight.

The wreck happened just after 11 p.m. Thursday night when an officer was conducting a traffic stop on the 8100 block of Gateway East near Lomaland,.

El Paso Police spokesman Detective Mike Baranyay said the officer was standing outside his police car when a Ford Mustang slammed into the back of the unit. The officer was not injured.

Detective Baranyay said the driver of the Mustang was unresponsive. 

"The officer did indicate the driver never applied the brakes prior to striking the patrol car. That's usually indicative of an unconscious person which could be related to a medical condition, they could be sleepy or intoxication could cause that as well," said Det. Baranyay.

EMS crews arrived shortly and conducted CPR on the man at the scene. He was rushed to a nearby hospital, where he is said to be in critical condition.

A police spokesman said they are currently not ruling out any factors for the cause of the crash.

Det. Baranyay said the man's name will not be released until his family is notified.