CAMP SK PENDATUN, Maguindanao del Norte- At least three persons were killed on the spot inside the Mindanao State University (MSU-Marawi) gymnasium when a suspected improvised bomb was set off while a Catholic mass was going on Sunday morning, police said.
Colonel Robert Daculan, Lanao del Sur police provincial director, said the blast occured inside the gymnasium at 7 a.m. while the mass had just started.
"Many were down on the floor after the blast," Daculan said in a radio interview in Marawi City. Initial reports said the three students died on the spot.