Twitter however said it had not done a deal with the Pakistani government which in the past has threatened to put curbs on the Internet over content considered blasphemous or pornographic. "There have been no changes by us," said spokesman Gabriel Stricker.

The microblogging site was unblocked at the orders of the country's prime minister, interior minister Rehman Malik said on Sunday, but he requested that anti-Islam material that hurts the feeling of people should be stopped on Twitter.

The government may have backed down in the face of protests from civil groups, but the dispute may be far from over.

In a message later, Malik the issue was taken up with the management of Twitter, but was declined. "Notice is now being served to twitter through Interpol to block such material," he added.

On Saturday, the country's newly appointed minister for information technology, Raja Parvez Ashraf told reporters about his concern about blasphemous content on different websites and threatened that Twitter would be banned soon if the company did not comply with the government's orders, according to activist group, Bytes for All, Pakistan.