A death investigation is underway after an accident on the Gulf Freeway.

Houston police said Channea Ou, 58, and his wife were driving south on the connecting ramp from the South Sam Houston Parkway to the southbound Gulf Freeway when he hit the guard rail just before 10 a.m. Sunday.

After the accident, police said Ou walked back along the path that his vehicle had taken and then returned to the vehicle where his wife was still sitting in the front passenger seat. He spoke to his wife, and then ran up the connected ramp about 400 feet and climbed onto the guard rail. 

Police said Ou then fell, or purposefully jumped, to the service road below. He died at the scene. 

Ou's wife was injured in accident and was transported to Southeast Memorial Hermann Hospital for treatment. 

Police do not suspect foul play in this incident.