( CNN ) -- An 18-year-old suspect in Tuesday 's bus-stop shootings that wounded seven people in Detroit , Michigan , surrendered to authorities Wednesday , police said . Detroit 's deputy police chief called Tuesday 's shootings `` a travesty . '' Detroit Police Chief James Barren said Jamall Turner is one of two suspects in the shootings , which occurred at a bus stop near Cody High School after summer-school classes had ended for the day . Two men got out of a green minivan and `` fired multiple shots at a group of teens waiting on a bus , '' he said . Police were investigating rumors from witnesses that the shootings were gang-related . Officials said Tuesday that the gunmen asked for a person by name before shooting , getting back into their vehicle and fleeing . A third person was waiting in the minivan to aid in their escape , he said . Police have impounded two vehicles matching the van 's description but do not know whether either was actually involved in the crime , he said . On Tuesday , police took another person into custody in an arrest that was not related to the shootings , `` but we believe that the arrested individual may shed light on the bus-stop shooting , '' he said . Deputy Police Chief James W. Tolbert said three of the victims remained hospitalized Wednesday with wounds that were not life-threatening . He said police believe that semiautomatic handguns were used . `` Any time there is a shooting and we have young people shot , it 's a travesty , '' he said . `` We have to get our youth to understand that conflict resolution is n't picking up a gun . '' Tolbert added that the police are instituting a `` safe-routes-to-school program . ''
Jamall Turner is one of two suspects in the shootings . Seven people were injured ; three remain hospitalized . Comment: