TIGHTENED SECURITY. Police inspect motorists as security measures have been tightened Tuesday (May 31, 2022) in Isabela City, the capital of Basilan province. Two persons were injured while four vehicles were damaged when improvised bombs exploded one after the other Monday (May 30, 2022) in Isabela City. (Photo lifted from Ronda del Basilan's Facebook Page) ZAMBOANGA CITY - Police authorities are tracking down two "persons of interest" behind the twin bombings Monday that injured two persons and damaged four vehicles in Basilan province. The blasts occurred 30 minutes apart in Isabela City, the capital of Basilan. The first explosion occurred at 5:45 p.m. at the parking lot of a food chain outlet in the downtown area, while the second blast rocked the terminal of the D'Biel Transport Company along Valderosa Street, Barangay La Piedad. Brig. Gen. Franco Simborio, Police Regional Office-Zamboanga Peninsula (Region 9) director, said the first person of interest was behi