The death toll in a blast in southwestern Pakistan rose to four, local TV channel reported.
At least four people were killed and six injured in the explosion in Quetta, capital of southwestern Pakistan's Balochistan province on Tuesday, private Dawn TV quoted police as saying.
Police said it was a toy bomb that exploded in the house of Afghan refugee.
The bodies and injured have been shifted to the nearby hospital.
Also on Tuesday, a roadside bomb in northwestern Pakistan's Kurrum tribal agency killed four people and injured seven, said the TV reports.
The TV gave no further details. No groups claimed responsibility for the blasts. Source:Xinhua
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