Karachi police have arrested the second son of a man who was allegedly murdered over a property dispute in the Ibrahim Hydari area, 24NewsHD TV reported on Sunday.
According to police, the latest arrest is that of Jamshed, the third suspect in the case.
Investigators said he confessed that he had allowed his brother to go ahead with the murder because their father allegedly used to abuse the elder brother, Ejaz, physically.
Earlier, police had arrested Ejaz, the victim's son, and his friend Shiraz for their alleged involvement in the murder of Iqbal.
Police said Ejaz was involved in a long-running property dispute with his father and allegedly persuaded his friend Shiraz to carry out the killing by offering him Rs15,000 and an iPhone.
Investigators said Shiraz allegedly shot and killed Iqbal on June 23 in the Ibrahim Hydari area.
During the investigation, police recovered the weapon used in the murder as well as the motorcycle used in the crime.
Further investigation into the case is underway.