A powerful explosion believed caused by a bomb ripped through a Catholic Mass and killed at least four people and wounded dozens of others Sunday in a predominantly Muslim city in the southern Philippines, officials said.
The morning Mass was underway in a gymnasium at the state-run Mindanao State University in Marawi city when the explosion happened, causing panic among dozens of students and teachers and leaving the victims bloodied and sprawled on the ground, said Taha Mandangan, the security chief of the state-run campus.
