They were stationed in Kamra till now, let's see when this news gets confirmed officially.
There's a SAAB sqn posted at Bholari ( as per a PDF post ) as well and last time I checked Bholari can house 2 squadrons only and if you check Google Maps ( yes not very latest ) the number of HAS can handle only 1 squadron. But let's wait for official news.
Not very long ago, two senior and credible PDF members ( one AWOL now ) claimed Masroor will be converted to a Slow Flying base and Fighters will move to Bholari. But so far that hasn't happened yet either.