I don't doubt there was Pak involvement. The few SAGGER-Ts we found were from Pakistan ... whether they were cheap on the black arms market or someone in Islamabad let some slipped through, I don't know. The question is of what level and what effectiveness. As I stated, I know of no Pak Captains leading combat companies in Bosnia. We have pretty well identified all the major combatant formations at company level and above (there were no 5000 Pak contingent, that's just pure BS).
Pakistanis not in Bosnia?? Are you speaking about a specific timeframe? Pakistan has had a robust presence in Bosnia from 92 - 96 (2 Pakistani Inf bns and suporting elements called PAKBAT1 and PAKBAT2 operated around Tuzla). The Pakistani commitment in terms of manpower was around 3000.
Sagger-Ts are not in the Pakistan Army inventory so nothing to do with these. POF did export about 30 or so Baktar Shikan (Green Arrow) ATGM systems plus rounds in low hundreds. Those were used by the Bosnians themselves. Based on what I know, Pakistani Army advisors "advised" the Bosnian Army. The systems were/are effective with Royal Malaysian Army purchasing them as well from Pakistan.