GLOBAL ECONOMY

Pakistan detains dozens after 75 killed at Shiite shrine

  • Pakistani para-military soldiers stand alert after a deadly suicide attack at the shrine of famous Sufi Lal Shahbaz Qalandar in Sehwan, Pakistan, Thursday, Feb. 16, 2017. An Islamic State suicide bomber targeted worshippers at a famous shrine in southern Pakistan on Thursday, killing dozens of worshippers and left hundreds of people wounded, officials said. (AP Photo/Pervez Masih)

    Pakistani para-military soldiers stand alert after a deadly suicide attack at the shrine of famous Sufi Lal Shahbaz Qalandar in Sehwan, Pakistan, Thursday, Feb. 16, 2017. An Islamic State suicide bomber targeted worshippers at a famous shrine in southern Pakistan on Thursday, killing dozens of worshippers and left hundreds of people wounded, officials said. (AP Photo/Pervez Masih)  (The Associated Press)

  • Pakistani students light candles to condemn the recent attack on a shrine in interior Sind province, Thursday, Feb. 16, 2017 in Karachi, Pakistan. An Islamic State suicide bomber targeted worshippers at a famous shrine in southern Pakistan on Thursday, killing dozens of worshippers and left hundreds of people wounded, officials said. (AP Photo/Shakil Adil)

    Pakistani students light candles to condemn the recent attack on a shrine in interior Sind province, Thursday, Feb. 16, 2017 in Karachi, Pakistan. An Islamic State suicide bomber targeted worshippers at a famous shrine in southern Pakistan on Thursday, killing dozens of worshippers and left hundreds of people wounded, officials said. (AP Photo/Shakil Adil)  (The Associated Press)

  • Dead bodies of alleged militants killed in a crackdown operation by security forces are laid at a mortuary in Karachi, Pakistan, Friday, Feb. 17, 2017. Pakistani security forces arrested dozens of suspects in sweeping raids a day after a massive bombing claimed by the Islamic State group killed dozens of worshippers at a famed Sufi shrine in a southern province. (AP Photo/Shakil Adil)

    Dead bodies of alleged militants killed in a crackdown operation by security forces are laid at a mortuary in Karachi, Pakistan, Friday, Feb. 17, 2017. Pakistani security forces arrested dozens of suspects in sweeping raids a day after a massive bombing claimed by the Islamic State group killed dozens of worshippers at a famed Sufi shrine in a southern province. (AP Photo/Shakil Adil)  (The Associated Press)

Pakistani security forces have arrested dozens of suspects in sweeping raids a day after a massive bombing claimed by the Islamic State group killed 75 worshippers at a famed Sufi shrine in a southern province.

The terror attack — the country's deadliest in years — stunned the nation and raised questions about the authorities' ability to rein in militant groups despite several military offensives targeting insurgents.

A suicide bomber walked into the Lal Shahbaz Qalandar shrine in Sehwan, in southern Sindh province, and detonated his explosives among a crowd of worshippers on Thursday, killing 75. Scores were also wounded in the explosion.

Security officials said Friday's raids led to the arrest of 47 suspects, including some in Sindh province. The officials spoke on condition of anonymity in line with regulations.