HOUSTON - A former Missouri City police officer has been charged in the fatal accident that left one woman dead and injured two of her family members over the weekend.

Stephen Alan Cook, 45, is charged with intoxication manslaughter and two counts of intoxication assault. Cook was employed with the Missouri City Police Department from April 2003 to April 2007 at which time he resigned.

According to the Houston Police Department, the 62-year-old woman was fatally hit by Cook as she was helping her step-daughter and grandchildren whose car had stalled on the Southwest Freeway.

The woman's step-daughter and grandchildren had apparently run out of gas on US 59 and had called the woman for help.

Police said the victim's step-daughter, was driving a Nissan on the Southwest Freeway with her two children when they ran out of gas and moved into the emergency lane.

Around 8 p.m., while the women were putting gas in the vehicle, Cook clipped the front end of the woman's van with his Mercury Grand Marquee and slammed into the back end of the Nissan.

HPD said this pushed the van into the Nissan, placing the step-mom in between the two cars.

The step-daughter and her 15-year-old daughter were both struck, but her 9-year-old son managed to jump out of the way.

The entire family was transported to the hospital, where the 62-year-old woman died.

The woman's daughter is in serious condition, but is expected to survive. The 15-year-old had minor injuries and the 9-year-old was not injured.

Cook was treated for minor injuries and arrested.

According to court documents, Cook was convicted of a misdemeanor DWI in Fort Bend County less than four years ago.