ZAMBOANGA CITY: An improvised explosive exploded inside a bus in Santo Niño town, South Cotabato. The police are investigating the incident that targeted a Yellow Bus Lines unit, authorities said. No one was hurt in the incident. According to reports, the bus came from Isulan town in Sultan Kudarat and was heading to Koronadal City when a passenger noticed the explosive and alerted the driver. The passengers were ordered to quickly get off the bus before the bomb exploded.