Police officers search the belongings of a bus passenger at a security check point, part of the Indonesian National Police’s crack down on a potential cell of the Southeast Asian terrorist network Jemaah Islamiyah in Pidie.

JAKARTA: Indonesian police have captured 13 suspected militants including some who were foreign-trained during a crackdown on a possible cell of the Southeast Asian terror network Jemaah Islamiyah in restive Aceh province, an official said Wednesday.

The men were caught in several raids since Feb. 22, when the first four were arrested by police after a gunbattle in a suspected militant training camp in Aceh’s mountains, police spokesman Maj. Gen. Edward Aritonang said. All are believed to have trained at the camp, he said.

“There are strong indications that among the 13 men … some are trainers who were well trained overseas,” Aritonang told The Associated Press. He declined to say where they had trained, but said all were Indonesian nationals.

Police also seized three assault rifles, more than 9,000 bullets, jihadist books, and DVDs about bombings on the island of Bali in 2002 that killed 202 people and were blamed on Jemaah Islamiyah, Aritonang said.

Police have not confirmed media reports that at least some of the suspects have been charged with terrorism-related offenses.

“We are still investigating their group and its links to the JI terrorist network,” Aritonang said.

Jemaah Islamiyah cells have not previously been found in deeply conservative Aceh province, and independent terrorism analysts have expressed doubts about whether the suspects actually are linked to the group.

No other terrorist groups are known to be active in Aceh. Separatist rebels signed a peace agreement with Indonesia’s government in 2005, ending 29 years of fighting.

Aritonang refused to comment on reports that police fatally shot a man who fled from a bus when it stopped at a police checkpoint in the Pidie district of Aceh before dawn Wednesday.

Witnesses said the man was one of three who fled. The two others managed to evade capture, said bus driver Aiyub, who goes by one name.