Lahore Qalandars have lodged an official complaint against Karachi Kings president Wasim Akram and their players Mohammad Amir and Imad Wasim after an off-field spat following the PSL game between the two sides on February 16.
The PCB is yet to arbitrate on the issue, but Lahore insist that the incident was a "clear violation of code of conduct".
Akram was seen having a heated argument with the family members of Fawad Rana, the owner of the Lahore franchise, after Karachi's loss by 22 runs. Imad, the captain, and fast bowler Amir were also part of the argument, which allegedly included inappropriate gestures.
Moments later, Akram stormed off and made his way to the post-match presentation while Imad and Amir were dragged into the dressing room by the Karachi manager. Usman Wahla, a PCB official, is also believed to have been involved in the incident. Two dignitaries from Lahore's hospitality box were briefly taken into custody too, but were released shortly after.
ESPNcricinfo understands that an unidentified fan in Lahore's hospitality box had seemingly angered Akram, which resulted in an argument. Lahore then sent a written complaint to Roshan Mahanama, the match referee, the next day, but he distanced himself from the issue. The PCB and the PSL's technical committee are now looking into it.
Lahore want the PCB to retrieve CCTV footage and take action before they face Karachi again on February 28. Karachi, meanwhile, haven't offered an explanation yet, with a spokesman confirming that the PCB hasn't engaged with them on the matter as of Tuesday evening.