JAYAPURA, INDONESIA- Security forces tried to recover the bodies of 31 construction workers and a soldier who were killed in one of the worst separatist attacks in Indonesia’s restive province of Papua, officials said Tuesday.

Papua police spokesman Suryadi Diaz said 24 workers were killed on Sunday when gunmen stormed a government bridge construction project in a remote mountainous village in Nduga district.

Citing reports from several witnesses, Diaz said, eight other workers fled to the nearby house of a local parliament member, but an armed group came a day later and killed seven of them. However the eighth managed to escape and remains missing.

“This is the worst attack launched by the armed criminal group recently amid intensified development by the government,” Diaz told The Associated Press.

Separately, Papua province military spokesman Lt. Col. Dax Sianturi said an armed group attacked a military post in Mbua village in the same district late Monday, killing a soldier and injuring another.