Islamabad: One of the biggest micro social website twitter’s was suspended across the Pakistan, PTA announced on Sunday. Pakistan Telecommunication Authority (PTA) has blocked twitter.com following the Prophet Muhammad (PBUH) caricatures controversy. Zonal Directors have instructed all ISPs in their respective areas to immediately block the website at the URL level and to continuously monitor the same to ensure compliance with the instructions of the authority. Ministry of IT has also directed the PTA to remain alert and watchful and block all links displaying profane caricatures immediately. Ministry of IT has requested the public at large to contact a dedicated Telephone No 0800-5505 and e-mail address: firstname.lastname@example.org, to transmit necessary information, should anything to the effect of objectionable caricature get displayed/propagated at any website.