KARACHI, March 3 (Reuters) - A bomb attack in a Shi'ite Muslim area of Pakistan's commercial capital Karachi killed 25 people and wounded 50 on Sunday, the police said.
Police Inspector General Fayyaz Leghari said a suicide bomber may have been behind the attack, the latest signal that Sunni militant groups are stepping up pressure on the minority sect. (Writing by Michael Georgy; Editing by Robin Pomeroy)
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