Four men-Hendrik Angel Sahetapi, Adrianus Candra Galaga, Yohanes Juan Mambait and Gamaliel Yermiayanto Rohi Riwu-were being held at Cebongan Prison in Sleman, Yogyakarta on suspicion of having murdered former Kopassus First Sergeant Heru Santoso in a Yogyakarta café with a broken bottle [REF].
At 12:30 a.m. on 23 March 2013, a group of armed men in masks arrived at the prison gate claiming to be police detectives and demanding to see the four.