In an apology, the network said it never intended to imply that blasphemy should be punished and said the tweet was poorly worded.
It emerged this week that Pakistan has asked Facebook and Twitter to help identify Pakistanis suspected of blasphemy so it can prosecute them or pursue their extradition.
Under the countrys blasphemy laws, anyone found to have insulted Islam or the prophet Muhammad can be sentenced to death.
The interior minister, Chaudhry Nisar Ali Khan, said an official in Pakistans Washington embassy had approached the two social media companies in an effort to identify Pakistanis, either within the country or abroad, who recently shared material deemed offensive to Islam.
He said Pakistani authorities had identified 11 people for questioning over alleged blasphemy and would seek the extradition of anyone living abroad.
The BBCs tweet prompted anger and disbelief on social media. Human rights campaigner Maryam Namazie said the tweet was disgraceful.