QUETTA, Pakistan, Jan 21 (Reuters) - At least 22 people were killed in Pakistan on Tuesday when a bomb exploded near a bus carrying Shi'ite Muslim pilgrims to the city of Quetta, local officials said.
One official told Reuters the pilgrims were coming back from a trip to Iran. (Reporting by Gul Yousufzai, Writing by Maria Golovnina; Editing by Mark Heinrich)
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