A Florida grand jury has cleared two police officers who fatally shot a 21-year-old black motorist last April.

A grand jury in St. Lucie County cleared Fort Pierce police Sgt. Brian MacNaught and officer Keith Holmes for the April 23 shooting of Demarcus Semer during a traffic stop.

St. Lucie County sheriff's investigators say an officer tried to pull over Semer but he didn't stop until the second officer arrived. Sheriff Ken Mascara said Semer then pulled away. He clipped one officer in the leg and dragged the other in the car window. He eventually pulled over, got out and ran. The officers fired, killing him. Both officers are white.

The grand jury says a small amount of marijuana was found in Semer's car and in his system.