A construction worker was killed as he fell from the roof of seven-storey building in the city’s Rampura area on Sunday.The deceased was identified as Alomgir Hossain, in his thirty.Witness said construction worker Alomgir suddenly fell from the roof of the seven-storey building while he was working there in afternoon, leaving him unconscious.Later, he was whisked off to Dhaka Medical College Hospital where doctors declared him dead.