The Islamic State group claimed responsibility for a deadly suicide bombing on a Shiite mosque in southern Afghanistan that killed 47 people and wounded scores more.

In a statement posted late Friday on social media, the IS group said two of the group's members shot and killed security guards manning the entrance of the Fatimiya mosque in Kandahar province.

One detonated his explosives at the entrance of the mosque and the other inside.

IS group’s news agency Amaq in a statement gave the names of the attackers as Anas al-Khurasani and Abu Ali al-Baluchi, both Afghan nationals.

The attack came a week after a bombing claimed by the local Islamic State group affiliate killed 46 people at a Shiite mosque in northern Afghanistan, raising fears that the IS group — an enemy of both the Taliban and the West — is expanding its foothold in Afghanistan.

Friday's attack was the deadliest to strike Afghanistan since the dramatic US exit from the country, which allowed the Taliban to seize control of the Afghan capital. It was also the first major attack by the group in the country's south.

The IS group carries out frequent attacks in its eastern stronghold, but recently has shown signs of expansion, with attacks in the north and Kabul.

The attacks have brought into question the Taliban's ability to counter the growing IS threat.

The Taliban have pledged to restore peace and security after decades of war and have also given the US assurances that they will not allow the country to be used as a base for launching extremist attacks on other countries.

AP