<sod >Local TV reports say that the explosion happened after a car slammed into a bus, raising suspicions that a car bomb may be to blame.< eod>< sod > 28. Local TV reports say that the explosion happened after a car slammed into a bus, raising suspicions that a car bomb may be to blame, but it came amid conflicting reports from other local journalists who suggested a device may have been planted at the scene.< eod>