A crash involving an alleged speeding drunk driver put two people, including a deputy, in the hospital in southeast Texas this weekend. 

An on-duty Harris County deputy was driving north on Tomball Parkway shortly after 11 p.m. Friday when the patrol vehicle was rear-ended, FOX 26 Houston reports. 

The deputy, who has not been identified, was not responding to any calls at the time of the accident, the outlet said.

Witnesses said an unidentified man driving a white Mercedes was speeding down the highway before hitting the deputy's vehicle.

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FILE - A close-up shot of a Harris County (Texas) sheriff's badge.

FILE - A close-up shot of a Harris County (Texas) sheriff's badge. (Harris County Sheriff)

Several bystanders reportedly tried to help the deputy, but the deputy told them to help the other driver, who was described as "extremely intoxicated." 

Harris County Sgt. Bondurant said the deputy was unconscious for a short amount of time after, according to Houston-area outlet KHOU-TV.

The deputy and the other driver were taken to local hospitals in stable condition. Both are expected to be OK.

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Harris County, Texas cruiser

FILE - A Harris County Sheriff's Office cruiser sits in a parking lot. (Harris County Sheriff's Office/Facebook)

Investigators believe the suspect was traveling over 100 mph when he hit the deputy, KHOU reported.

The deputy did not have lights or sirens on and was driving at about 70 mph when the car was hit.

Harris County, Texas

A Google Earth image shows the outline of Harris County, the largest county in Texas. (Google Earth)

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The sheriff's office said several charges for driving while intoxicated are pending.