The number of people killed in a suicide attack on a Sufi temple in southern Pakistan rose to 76 Friday, while the number of wounded stands at 210, 40 of whom are critical, a police official told EFE.

"The death toll has reached 76 and the injured are still 210 with 40 critical," said Rasool Bakhsh, police chief of Shewan in the Sindh province, where the attack occurred on Thursday evening.

The official added that the entire city is mourning and most of the shops are closed while more than 200 security personnel have been deployed at the temple.

A suicide bomber detonated the bombs he was carrying inside the Lal Shahbaz Qalandar temple while a large number of people were taking part in a religious ceremony.

Sufis in Pakistan have often been the targets of extremists and the Taliban, who frequently attack their temples.

In November, a suicide attack by the Islamic State terror organization on a temple in Baluchistan left 52 dead and more than 100 injured.

There has been a decrease in violence in the country since the start of a military operation in 2014 in tribal areas, which is still ongoing, in a bid to try and reduce violence.

But this was the sixth attack in Pakistan this week, including one suicide blast in Lahore that left 14 dead, and another explosion in Balochistan earlier Thursday that killed three soldiers.