Approximately 915pm Houston Police were responding to a major accident on I-45 northbound at Rankin. One HPD officer entered I-45 at Greens Road. The officer came across all moving lanes of traffic and slammed into the bed of a wrecker which was also going to the same crash. The impact ripped the front bumper of the patrol vehicle off. The patrol units engine compartment burst into flames. The officer was not injured. As the investigation was winding down HPD discovered the wrecker driver had an open traffic warrant for failure to appear. He was arrested and transported to the Harris County Jail.