Suicide bombers have launched a triple attack on a Sufi shrine in the eastern Pakistani city of Lahore.
At least 35 people died in the blasts at the popular Data Darbar shrine late on Thursday evening, officials say.
At least 175 other people were hurt in the blasts, believed to be the first targeting a shrine in Lahore.
Thousands of people were visiting the shrine at the time, officials say. It holds the remains of a Sufi saint, Abul Hassan Ali Hajvery.The shrine is visited by hundreds of thousands of people each year from both Sunni and Shia traditions of Islam.
Khusro Pervez, commissioner of Lahore said two of the attacks took place in the main courtyard and one in the lower level of the shrine.
The attacker struck in the underground area where visitors sleep and prepare themselves for prayer, he said. As people fled, a second bomber detonated his explosives in the upstairs area.
Officials say they believe the bombers used devices packed with ball-bearings to maximise the impact of their attack.
History of attacks
Lahore has been hit by a series of bomb attacks, including a suicide blast at anti-terrorist offices in March, when at least 13 people died.
In May, more than 90 people were killed in a double attack on the minority Ahmadi sect in the city.Earlier, security chiefs had been congratulating themselves after what was the first month in two years in which there had been no suicide bombings in Pakistan, the BBC's Aleem Maqbool reports from Islamabad.
They said it was proof the militant networks had been disrupted. Most Pakistanis knew the battle against militancy in this country was far from over, he adds.
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Source : bbc