By Hameedullah Khan
PESHAWAR, Pakistan, Feb 4 (Reuters) - - An explosion in a densely populated neighbourhood of Pakistan's volatile city of Peshawar killed at least seven people on Tuesday, hospital sources said.
The attack took place after dark in a neighbourhood dominated by the minority Shi'ite Muslim population which has come under increasing attack from hardline Sunni groups.
Hospital sources in Peshawar, a sprawling, dusty city on Pakistan's unstable frontier with Afghanistan, said several dozen people were wounded. It was unclear what caused the blast. (Reporting by Hameedullah Khan; Writing by Maria Golovnina; Editing by Jon Boyle)
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