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KARACHI, Pakistan (AP) — A police official says a blast at a Sufi shrine in southern Pakistan has killed two people.

Sindh province police spokesman Imran Shakat said the blast Monday in the city of Shikarpur wounded 12 people, two of them critically. It was the second attack on a Sufi figure or location in Sindh province in less than a week.

Last week, the grandson of a prominent Sufi cleric was killed when a roadside bomb targeted the cleric's convoy. There was no immediate claim of responsibility. Many Sunni Muslim extremists do not approve of the more mystical form of Islam that is practiced by Sufis in many parts of southeast Asia.