At least 75 people have been killed and about 170 injured during five days of ethnic clashes in Pakistan's southern port city of Karachi, rescue workers said Saturday, according to dpa. The fighting started Tuesday between the Urdu-speaking majority and Pashtu-speakers after the killing of a Pashtun leader. "The violence is still going on between the rival gangs as two more people were killed and three injured since morning," said Faraz Ahmad, a spokesman for the private Edhi ambulance service. He said 75 people had been killed 169 injured.