HOUSTON -

Three people were injured and an unborn child was killed after a high-speed chase and crash that started in Pasadena, police said.

A clerk at the Valero gas station on Highway 225 and Pasadena Boulevard called police about 11:30 p.m. He said a woman in a sport utility vehicle was acting erratically and not making sense while a man was pumping gas.

When a Pasadena police officer arrived at the scene, the man stopped pumping gas, got into the driver's seat of the SUV and drove off. Because the officer did not know why they left in such a hurry, he tried to pull them over. They refused to stop and led the officer on a chase westbound on Highway 225 and then onto Lawndale.

The driver, identified as 51-year-old Kenneth Ray Humphrey, lost control and rolled over at the intersection of Lawndale and Central Street, just inside the Houston city limits.

Humphrey was thrown from the vehicle and taken to a hospital in critical condition. Two women inside the vehicle suffered non-life-threatening injuries. One of them, a 34-year-old pregnant woman lost her unborn child.

The woman who was not pregnant, Nelia Yarzagaray Riley, 30, has been charged with possession of a controlled substance.

Humphrey has been charged with felony evading causing death.