As many as four people were killed in ongoing violence in the city on the first day of holy month of Ramazan on Saturday.
In another incident, a man, Shoaib was shot dead by armed motorcyclists while his friend Ishaq was injured in New Karachi. He was an activist of a religious party.
Shafqat, a policeman, succumbed to his bullet injuries in Pak Colony.
A man Muhammad Zafar was killed with sharp pointed scissor outside his home in Sherpao Colony, Quaidabad.
In a separate incident, Dr Ishaq was gunned down outside his clinic in Al-Asif Square, Suhrab Goth. Police said that he was related to the United Nations organization.
Police started investigations into the incidents.