The head of the city police force said it appeared the attacker was targeting an army installation next to the outdoor court in the village of Fatima where the circus was taking place but the grenade hit a barrier and bounced into the crowd, GMA News said Sunday.
Police Director Ronald De La Rosa told reporters five of the injured were in critical condition, DZMM Raydo Patrol 630 said.
Davao City in the southern Philippines is in an area where communist New People's Army guerrillas have been active over the years, the Mindanao Examiner said.
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