The worst affected area was again the city's hottest flashpoint, Orangi Town where violence was reported on Tuesday from several localities in which 11 people were shot dead and dozens sustained gun shot injuries.
'Dharavi will be completely slum free by 2040'
Violence continued in Pakistan's biggest city on Thursday with at least 18 people, including a police constable, doctor and two brothers being killed, police said.
At least 31 people, including members of the minority Shia community, have been killed in various incidents of target killings in Pakistan's commercial city of Karachi and Balochistan's capital Quetta.
Eleven people died in sectarian violence in Pakistan's largest city today, taking the overall death toll in two days to 18 as unrest spiralled out of control on the eve of the Islamic holy month of Muharram.
A Pakistani provincial legislator and three of his bodyguards were shot dead by unidentified gunmen in Karachi on Thursday.
Dharavi, a congested slum located in the heart of India's financial capital Mumbai, said to be the largest slum in Asia, is actually not, a report by the United Nations Development Programme claims.
A Muttahida Quami Movement legislator and his son were shot dead by gunmen in a drive-by shooting outside a mosque in Karachi on Friday, leading to eruption of violence in many parts of Pakistan's biggest city that claimed four lives.
No one has taken responsibility for the attack.