Three lawyers were killed when unidentified armed men opened fire on their car near then Aram Bagh area of Karachi.
A fourth lawyers is in critical condition and is undergoing surgery at the Civil Hospital.
The police have described the act as target killing and say the attackers were riding motorcycles and chased the lawyers from the city court.
Lawyers have announced a nationwide strike in protest of the killings.
According to the MLO of the civil hospital, all three of them were shot at point-blank range.
Eyewitness accounts state that the police failed to act and only opened aerial firing after the attack had already taken place.
The police were also late in cordoning off the crime scene.
Home Minister Sindh Mansoor Wasan has ordered the suspension of SHO Aram Bagh, while Interior Minister Rehman Malik has summoned a report from IG Sindh. (The News)