After blocking access to Twitter on Sunday for about 12 hours because of "blasphemous" material, Pakistan officials said the service was resumed resumed after 12 hours.

Pakistan blocked access to Twitter on Sunday after Twitter reportedly refused to remove tweets that were promoting a competition on Facebook to post images of Islam's Prophet Muhammad.

Interior Minister Rehman Malik said on the website Sunday night that he had intervened and asked the prime minister to order an end to the ban.

"Dear All yes I spoke to PM and informed how people are feeling about it.PM ordered to reopen the twitter," Malik tweeted.

Two years ago, Facebook was also banned by Pakistan authorities for a similar reason. Facebook had blocked access to the controversial page in Pakistan.