Frisco Police Department's employee critical incident policy led to the Texas Rangers being asked to investigate the shooting.

Frisco police officers shot and killed 43-year-old Gregory Sheppard while serving a felony warrant at his home last Thursday. Frisco police say they were trying to serve felony warrants for Sheppard and 32-year-old Kara Carper when he pointed a gun at officers.

Police in Frisco were serving felony warrants for a man and a woman in a gate community. A man pointed a gun at officers, leading to an officer shooting and killing him.