Sir: It is very surprising to note that the Interior Ministry has been extending the deadline for the verification of biometric SIMs again and again. From March 2013 to May 15, 2015, the deadline has been extended about five times. It clearly shows that the Ministry is not serious in blocking unverified SIMs. The extension of dates means that many people can still use unverified SIMs that has made the country vulnerable to crimes, violence and militancy. In other words, the Interior Ministry and Pakistan Telecommunication Authority (PTA) are providing more and more opportunities to militants to spread terror in Pakistan, while various cellular companies do not want to block these SIMs due to their commercial interests. NAEEM SADIQLahore