At least four more people – including a suspected separatist rebel – have been killed in Indonesia's Aceh province, according to the military and residents.

Two male bodies with gunshot wounds were found at Keude Trieng in the northern district of Bireuen on Sunday, residents said on Monday. Cut Manyak, local deputy commander of the Free Aceh Movement (GAM), said they had been arrested by the military the previous day.

Troops shot dead a suspected rebel following an ambush of a military patrol at Lancok Baroh in Pidie district on Saturday, said Aceh military spokesman Major Zaenal Muttaqin.

A soldier was wounded by a bullet in the thigh during another clash with rebels at Matangkuli in North Aceh on Sunday, he said.

A worker at a local fertiliser plant was found dead with gunshot wounds on the outskirts of Lhokseumawe on Saturday, residents said. They said he had been abducted at his home by an unidentified group on Friday.

Soldiers arrested seven suspected GAM members during a raid in Kampung Baru near the provincial capital Banda Aceh on Sunday, said another military spokesman, Major Ertoto.

He said two handguns and cash totalling 29 million rupiah (3,300 dollars) were seized. A local GAM spokesman said the seven were civilians.

The Free Aceh Movement has been fighting since 1976 to establish an independent state in the province on Sumatra island. More than 10,000 people, mostly civilians, have died in the conflict, including over 500 this year alone.