Philippine police went on full alert nationwide Saturday ahead of the summit of Asia-Pacific leaders in Manila and following deadly attacks in Paris, beefing up security to ensure the safety of thousands of delegates.

All security personnel across the country's 7,100 islands are on alert, with close to 20 leaders due to attend the Asia-Pacific Economic Cooperation summit on Wednesday and Thursday, and after at least 120 people were killed in attacks across Paris.

"We are on full alert status nationwide because of APEC, and as part of routine procedure after incidents such as the one in Paris," Philippine national police spokesman Wilben Mayor said.