MANILA, Philippines (AP) – Two bombs exploded Tuesday in insurgency-torn southern Philippines, killing six people and wounding more than 30, as officials heightened security amid warnings that al-Qaida-linked terrorists were planning further attacks.

One explosion occurred in a stall selling alcohol during a festival in the town of Makilala on Mindanao island, said North Cotabato provincial Police Chief Federico Dulay. Six people were killed and at least 29 were injured. The second bomb went off in a market in Tacurong city in another part of the island, wounding five people. A security guard spotted the bomb hidden in a bag and threw it away from the crowd before it exploded, army Col. Felipe Tabas said.

The U.S., Australian and British embassies issued warnings against travel there.

They said the threat of imminent attacks or kidnappings is high across the archipelago, specifically in places frequented by foreigners.

“We believe that terrorists are in the final stages of planning further attacks,” said the British advisory, posted on the embassy’s Web site. “There is a high threat from terrorism throughout the Philippines.”

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