Complex sentence: The Military Police Command was called in at 3.30am to conduct a search within the camp premises, but after finding that he was no longer in camp the Singapore Police Force was contacted at 5.45am to initiate an island wide manhunt with 200 officers.
Split into simpler sentences: The Military Police Command was called in at 3.30am to conduct a search within the camp premises. After finding that he was no longer in the camp, the Singapore Police Force was contacted at 5.45am to initiate an island-wide manhunt with 200 officers.