SAO PAULO: Seven people have been found dead in Rio de Janeiro´s port after what police said was a deadly clash among suspected drug dealers. Military Police arrested 13 people and seized 14 guns, grenades and ammunition, they said. Suspects were taken to a detention centre while police rolled out in force in the area where it happened, called Complexo do Caju. The suspects were involved in a shootout among themselves, military police said, adding that city police would determine who was firing on whom. Violent crime is a major issue in Brazil, and especially in Rio, the former Olympic and World Cup host city.