Police said the explosion hit Husky Bus with plate number LWE 710.
The bus, which came from Cotabato City, was headed for General Santos City .
The injured passengers were rushed to Rama Hospital in Koronadal City for medical treatment. One of the injured was the bus conductor.
Rushed to South Cotabato Provincial Hospital in Koronadal City were Roldan Tonacao, 29, of Polomolok, South Cotabato; Arnel Nur Gayak, 24 of Sultan sa Barongis, Maguindanao; Rodney Lamoste, 24 of Surallah, South Cotabato, bus conductor
Rushed to Rama Hospital in Koronadal City, were Alfie Balutan and Daquilan Yusain.
Bus driver Ronaldo Daquinao was unharmed, said Supt. Froilan Quidilla, OIC Koronadal City PNP director.
Police are looking at extortion and business rivalry as among the motives in the blast.
Today’s explosion at the Husky Bus terminal was the third attack against the firm this year.
On March 22, a homemade bomb exploded when an unidentified man left a homemade bomb inside a bus at the Cotabato City terminal in Barangay Tamontaka.
Reports said the blast damaged the rear windshield of a regular bus, the side of an air-conditioned bus, and the terminal's concrete wall. No one was hurt.
Early March this year, a Husky bus was fired upon by still unidentified men along the Maguindanao highway while on its way to Cotabato City from General Santos City.
Last February, the Land Transportation Franchising and Regulatory Board (LTFRB) suspended the operation of some Husky buses due to questionable papers. It resumed operations after complying with the requirement. (Malu Cadelina-Manar/MindaNews)