ISLAMABAD: Justice (r) Wajihuddin Ahmed on Sunday resigned from the Pakistan Tehreek-i-Insaf (PTI) on Sunday.

Wajihuddin turned in his resignation to PTI Chairman Imran Khan, but did not mention a reason behind his resignation. It is unclear whether Imran Khan has accepted his resignation or not.

Wajihuddin has served as the party's election tribunal head. He was tasked to head a commission in 2013 to investigate "irregularities" in PTI's intra-party elections that took place before the general election in the same year.

The retired justice developed differences with party leadership over implementation of recommendations made by the tribunal.

His party membership had been suspended in 2015, after which he presented a seven-point charter calling for the ouster of Jahangir Tareen, Pervaiz Khattak, Aleem Khan and Nadir Leghari from the PTI.

He alleged that the party was being run like a mafia without any institutional checks and balances.