Six persons, including three sons of PML-N Candidate for Cantonment Board Election Naeem Butt, sustained injuries in a gun attack Sunday.

The injured were identified as Fahim Butt, Azeem Butt, Waseem Butt, Shafi, Adil Mukhtar and Irfan. They were taken to Lahore General Hospital.

 According to police, Naem's relatives Kamran, Nauman and Aaso Butt were involved in the gun attack. However, they added the investigation is on.