Blast rocks gas station in Karachi

KARACHI, Pakistan (Reuters) -- A powerful explosion rocked a Shell petrol station in the port city of Karachi on Wednesday.

There were no immediate details of casualties, police said.

"There has been an explosion at the Shell petrol station," Syed Kamal Shah, inspector general of Sindh provincial police, told Reuters. "We are trying to find details," he said.

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