MANILA, Philippines (AP) — The Philippine national police chief says a commander of the main Muslim rebel group that recently signed a peace deal with the government has been arrested, a move criticized by rebel leaders.

Director-General Alan Purisima said Monday that police and marine forces arrested Wahid Tundoc, a commander of the Moro Islamic Liberation Front wanted for multiple murder and other charges.

Purisima says Tundoc and some of his armed followers were apprehended Sunday at a government checkpoint in southern Cotabato city.

An official for the rebel group, Ghadzali Jaafar, says immunity guarantees under the ceasefire agreement cover Tundoc, and that talks were underway with the government to free the men. He says the peace deal would not be affected.