Authorities in Pakistan have asked 21 foreign aid groups to wrap up their activities and prepare to leave the country after they failed to re-register under a regulation introduced two years ago, AP said, citing two senior Pakistani security officials. The international non-government organizations in question were told about the decision this week, according to the officials. Pakistan unveiled tough registration rules in 2015 amid widespread suspicion that employees of aid groups were engaged in spying. The aid groups has not commented on the report.