Three dead in blast during Mass in Philippine university gym - police

Three people were killed and nine wounded when an explosion ripped through a Catholic Mass in a university gymnasium in the southern Philippines on Sunday, police said. The authorities are investigating the explosion at Mindanao State University, the regional police director, Brigadier General Allan Nobleza, told reporters, adding that one angle being pursued was possible revenge by pro-Islamic State militants. The blast occurred Marawi, a city besieged by Islamist militants.