By Mikhail Flores and Karen Lema MANILA, June 8 (Reuters) - At least 15 people were feared dead in the southern Philippines on Monday after a powerful magnitude 7.8 earthquake struck off the island of Mindanao,

Soon after a powerful earthquake struck off the southern island of Mindanao, Philippines --Tsunami alerts have been issued across several Asian countries, Al Jazeera reported.

Multiple aftershocks, at least 16 of them, have been recorded since the initial quake that struck off the coast of the southern Philippines at 07:37 local time.