This is a RUMOUR network though! You do not have to know where these rumours come from!
Perhaps these flights have been advertised in Pakistani papers over here aswell!
Youll find that youre unable to book any PIA flights but domestic flights on their website!
If oyu look at the schedules you'll see tht PK744 Leaves STN (Thats Stansted you know) at 0430pm. Further clicking around on this page shows that this is an a310 as stated before!