An assistant sub-inspector (ASI) of police was killed as a truck hit his motorbike at Sutrapur Boardghor on Dhaka-Tangail highway in Kalikoir upazila on Sunday night.The deceased was identified as Taiyubur Rahman, hailing from Datpara village in Mirzapur upazila of Tangail district.Sub-inspector of Mirzapur Gorai Highway Police camp Abdul Motalib confirmed the matter.He said a speeding truck hit a motorcycle carrying Taiyubur from opposite direction in the area at about 8:30pm, leaving him critically injured.Taiyubur was rushed to Mirzapur Kumudini Hospital where doctors declared him dead.