IMMIGRATION personnel in seaports and airports nationwide are on heightened alert, Commissioner Jaime Morente said on Tuesday, following the twin blasts in Jolo, Sulu where at least 20 people were killed and about 100 others were injured over the weekend.

“I have instructed our Port Operations Division to alert all its personnel and be on the lookout for suspected foreign terrorists who might attempt to enter the country,” Morente said in a statement.