The government has been left struggling for solutions to the worst wave of unrest to sweep the city in 16 years as extra deployments of police and paramilitary officers appear unable to stem the troubles.

Two bodies were recovered from Shadmaan Town and Pak colony respectively. while one body was found dumped near the Sakhi Hasan graveyard. One body bearing torture marks was also found in Surjani KDA flats. One unidentified dead body was found from Federal B.area.

A passenger bus came under attack by unknown gunmen in Orangi Town’s Data Nagar area, resulting in the death of the driver.

Waqar, an employee of Pakistan Air Force (PAF), sustained fatal bullet wounds in the city’s Khokharapar area. He succumbed to his wounds while getting treatment at a hospital.

Earlier on Friday, four policemen were killed and more than 25 others injured in a late night ambush on their bus in Korangi, one of several strife-hit areas.

Demands for the army’s intervention from the top business bodies of the country’s commercial capital increased with 21 deaths in the city on Friday.

In different other incidents, 18 people were either killed in armed attacks or their bullet-riddled bodies were found in different parts of the city.

The independent Human Rights Commission of Pakistan said more then 800 people have been killed in Karachi so far this year, compared with 748 in 2010.