MARAWI, Philippines—Philippine troops killed at least seven Muslim insurgents aligned with the ISIS terrorist group in a recent offensive in the south and recovered 45 heavy firearms and several bombs and land mines that were to be used in future attacks, military officials said Thursday. About 60 Muslim extremists were in the remote camp near Maguing in Lanao del Sur province when it was attacked Tuesday by fighter jets and army forces, military officials said. It was not immediately clear whether their leader, Abu Zacariah, was among those killed or managed to escape. One soldier was killed and five others were wounded in the fighting, the officials said. Zacariah has been implicated in past attacks and bombings and is suspected of being the newly designated leader of the ISIS in Southeast Asia, said army infantry brigade commander Brig. Gen. Jose Maria Cuerpo II, who oversaw Tuesday’s offensive. Two factions of …