An anti-terrorism court in Pakistan has sentenced a man to death for allegedly insulting the prophet Muhammed during an argument on Facebook.

Taimoor Raza, 30, was found guilty of blasphemy after he insulted the prophet and "disseminated offensive pictures," according to anti-terrorism court officials in Multan, Punjab province.

He was also convicted of "making comments against Sunni Muslim religious leaders" and insulting the prophet's wife, they said.

The case marks the latest example of a sweeping crackdown on social media in Pakistan, where unfounded allegations of blasphemy have led to vigilante justice.