Complex sentence: Preliminary investigations found that Sakthivel Kumaravelu while intoxicated, attempted to board the private bus which was believed to be ferrying foreign workers to the Avery Lodge dormitory.
Split into simpler sentences: Preliminary investigations found Sakthivel Kumaravelu to be possibly a passenger on the bus, who was intoxicated and had boarded the private bus. The bus was believed to be ferrying foreign workers to the Avery Lodge dormitory.