SAN ANTONIO – A 29-year-old man was critically injured after he jumped out of a fast-moving SUV on the city's Northeast Side.

Police said the man and a woman were arguing in a car around 1:30 a.m. when the man threatened to jump from a Jeep that was traveling at 60 to 70 mph.

The man eventually opened the door and jumped from the car on Loop 410 near the Industrial Center exit, police said.

The victim was taken to San Antonio Military Medical Center in critical condition with head trauma.

The driver told police that she thinks she may have ran over the victim, but a witness told police that another vehicle that didn't stop may have struck the man, police said.

Police don't know what triggered the argument.