Four persons of a family, including two women and a child, were critically injured as their motorcar collided with the running Bhubaneswar-Rourkela Intercity Express at the Gajamba unmanned level-crossing near here on Saturday.The injured were first admitted in the local PHC but later shifted to the SCB Medical College Hospital, Cuttack as their conditions deteriorated.The victims belong to Dhenkanal, said the Ghantikhal police The locals have since long been demanding to make the level-crossing a manned one.