A high-ranking member of the Philadelphia radical group MOVE has died in prison while serving a decades-long sentence for the 1978 killing of a police officer.

William Phillips, known as Phil Africa, was 63.

The state Corrections Department and a county coroner's office say Phillips died of natural causes Saturday at the state prison in Dallas, near Wilkes-Barre.

Phillips was serving a 30- to 100-year sentence in the fatal shooting of Officer James Ramp.

Phillips and eight other MOVE members were convicted of third-degree murder. He'd lost several parole bids and was scheduled for another hearing in June.

In 1985, city police bombed another MOVE house. The fire killed 11 people and destroyed 61 homes.

MOVE says Phillips made a deep impression worldwide.