NAUSHAHRO FEROZE, April 13: A teenaged boy was killed and his brother, two sisters, mother and uncle were seriously injured when a speeding trailer hit their motorcycle on Naushahro Feroze bypass on Friday.Abdul Samad, maternal uncle of Danish, 10; Mudassar, 9; Heer, 7; Iqra, 6; and their mother were on their way on a motorcycle to Naushahro Feroze from Munuth village. When they reached near police lines, a trailer hit them. Danish died instantly. Mudassar, Heer, Iqra and their mother were seriously injured. All the injured and deceased were taken to Naushahro Feroze Civil Hospital.