Pakistan says it has asked Facebook to help investigate "blasphemous content" posted on the social network by Pakistanis.

Facebook has agreed to send a team to Pakistan to address reservations about content on the social media site, according to the interior ministry.

Blasphemy is a highly sensitive and incendiary issue in Pakistan.

Critics say blasphemy laws, which allow the death penalty in some cases, are often misused to oppress minorities.

Earlier this week Pakistani Prime Minister Nawaz Sharif voiced his support for a wide-ranging crackdown on blasphemous content on social media.

In a statement on his party's official Twitter account, he described blasphemy as an "unpardonable offence".