AVH now reporting that sources within Pakistani CAA confirm ground contact was made with retracted gear on first approach, there was no communication of any fault or gear issue prior to the go-around. Sadly this confirms all that was suspected following the release of the PSPK photos.
From the wording it is not yet clear if the gear remained retracted throughout the approach, or if it was retracted before a positive climb was achieved, however the MLG doors would have been damaged if the gears were in transit while making the ground contact (Smartlynx), but no such damage is visible on the photos.