There was already confirmation (in Feb) that Paksitan would join CERN as A.M by June.
Pakistan to become CERN associate member by June - Pakistan - DAWN.COM
I guess it's happened...
Pakistan becomes first Asian associate member of CERN
There are many articles saying that Pakistan will soon become an associate member but only one article saying that Pakistan actually got it and it mentions a "press release by the foreign office". Any such release would have more references online. Specially considering that the meeting was held on Thursday.