Clifton police arrested two uncles and a cousin of Shahrukh Jatoi, on Saturday, the prime suspect in the murder of Shahzeb Khan.
The police also recovered a vehicle which was supposedly used in the murder.
According to sources, the Clifton police apprehended Shahzad Jatoi, Mazhar Jatoi and his son in Khyaban-e-Badar in Defence Phase V, Karachi.
During the initial interrogation, Mazhar told the police that Shahrukh Jatoi had left Islamabad for Dubai on December 27.
The police also raided a house of Asif Lund in Moro and seized his vehicle.