HARRIS COUNTY, Texas - A pregnant woman was killed in a crash caused by a speeding vehicle in northeast Harris County, sparking an investigation by the Harris County Sheriff's Office.

Authorities say a teenager was also in the vehicle and was hospitalized.

Truck leaves scene of deadly crash on Tidwell

What we know:

Major McConnell with the sheriff's office reports units were called to the 12400 block of Tidwell near C.E. King Parkway for a major crash.

Investigators learned a red Mustang driven by a pregnant woman in her 20s was going westbound on Tidwell and was going the speed limit. A teen was in the passenger seat.

A pickup truck approached from behind, going at a high rate of speed and hit the back of the Mustang, officials say. The hit caused the vehicle to go over the center

See Full Page