Updated

A powerful bomb detonated near a mosque at an event celebrating the birthday of the Islamic Prophet Muhammad in southwestern Pakistan on Friday, killing at least 52 people and injuring nearly 70 others, authorities say.

The blast, which authorities said was a suicide bombing, occurred in Mastung, a district in Baluchistan province, where around 500 people had gathered for a procession to celebrate the birth anniversary of Muhammad. Muslims hold rallies and distribute free meals to people on the occasion, which is known as Mawlid an-Nabi.

TV footage and social media videos showed the aftermath of the bombing. An open area near the mosque was strewn with the shoes of the dead and wounded. People were seen rushing the injured to receive medical care, and a state of emergency has been declared at local hospitals, which have issued calls for blood donations, the Associated Press reported.

Several of those injured in the blast were taken to the hospital in critical condition, government administrator Atta Ullah said. Abdul Rasheed, the District Health Officer in Mastung, said 30 bodies were taken to one hospital and 22 others were counted at a second hospital. 

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A boy injured in a bomb explosion receives medical treatment

In this photo provided by District Police Office, a boy injured in a bomb explosion receives treatment at a hospital, in Mastung near Quetta, Pakistan, Friday, Sept. 29, 2023. A powerful bomb exploded at a rally celebrating the birthday of Islam's Prophet Muhammad in southwest Pakistan on Friday, killing multiple people and wounding dozens of others, police and a government official said.  (District Police Office via AP)

"The bomber detonated himself near the vehicle of the Deputy Superintendent of Police," Munir Ahmed, the deputy inspector general of police, told Reuters.

No one has yet claimed responsibility for the attack, which comes amid a surge in activity by militant groups in Pakistan. 

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Aftermath of Pakistan bombing

People gather outside the Mastung hospital, following a deadly suicide attack on a religious gathering in Balochistan province, Pakistan, September 29, 2023 in this handout image.  (Shaheed Nawab Ghous Bakhsh Raisani Memorial Hospital Mastung/Handout via REUTERS)

The Pakistan Taliban is known to target security forces, but it distanced itself from the attack. The group, which has carried out some of the bloodiest attacks inside Pakistan since its founding in 2007, claims it does not target places of worship or civilians. 

Muslims chant religious slogans during a rally

Muslims chant religious slogans during a rally celebrating the birthday of Islam's Prophet Muhammad, in Rawalpindi, Pakistan, Friday, Sept. 29, 2023. Thousands of Muslims take part in religious processions, ceremonies and distributing free meals among the poor to mark the holiday.  (AP Photo/Anjum Naveed)

Authorities had earlier asked police to remain on maximum alert, saying militants could target rallies commemorating the birthday of Muhammad. 

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Victims of bomb explosion are treated in Pakistani hospital

In this photo provided by District Police Office, injured victims of bomb explosion are treated at a hospital, in Mastung near Quetta, Pakistan, Friday, Sept. 29, 2023.  (District Police Office via AP)

Another blast Friday hit a mosque located on the premises of a police station in Hangu, a district in the northwestern Khyber Pakhtunkhwa province, injuring seven people, a local police officer told the Associated Press.

He said the mud-brick mosque collapsed due to the impact and rescuers were attempting to remove debris and pull worshipers out of the rubble. Police have not yet determined the cause of that blast. 

Girls in traditional dress celebrate birthday of Prophet Muhammad

Girls in traditional dresses take part in a ceremony celebrating the birthday of Islam's Prophet Muhammad, in Karachi, Pakistan, Friday, Sept. 29, 2023. (AP Photo/Fareed Khan)

There were around 40 people worshiping inside the mosque, mostly police officers, when the blast went off.

Children parade at rally celebrating the birthday of Islam's Prophet Muhammad

Youngsters in traditional dresses take part in a rally celebrating the birthday of Islam's Prophet Muhammad, in Karachi, Pakistan, Friday, Sept. 29, 2023.  (AP Photo/Fareed Khan)

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Pakistan's President Arif Alvi has condemned the attack and requested that authorities provide all possible assistance to the wounded and the victims' families. 

In a statement, caretaker Interior Minister Sarfraz Bugti denounced the bombing and expressed sorrow and grief over the loss of lives. He said it was a "heinous act" to target people in the Mawlid an-Nabi procession.

The Associated Press and Reuters contributed to this report.