A Protestant pastor who says he was tortured while being detained in the Philippines has warned of widespread killings and other attacks against church members in the Asian nation.

Berlin Guerrero of the United Church of Christ testified last week for the United Nations Committee against Torture, amid reports of executions and other abuses carried out by the Philippines’ military. Victims have been accused of supporting rebel groups opposing the government. “Church people have not been spared from torture,” Guerrero told the UN Committee