A Chinese national was killed in a gun attack on Monday in Pakistan's southern port city of Karachi. Police say some unknown gunmen sprayed bullets at the victim's vehicle, parked near a vegetable market. The deceased was gunned down while a friend was shopping in the store. The shopper and another passer-by were also injured in the attack. Karachi is the capital city of Pakistan's Sindh province. The Chinese Consulate-General has warned local Chinese nationals to take caution.