(Adds police spokesman quote)

MOSCOW, Nov 15 (Reuters) - An explosion near a Moscow market popular with foreign tourists injured a woman on Thursday, police said.

Police did not say whether the blast was a bomb or not, although the RIA Novosti news agency later quoted a security source saying it had been a 50-gram bomb.

"I confirm there has been an explosion," a spokesman for the police at the Moscow city administration said. "But I don't have any information on whether it was a bomb."

The explosion occurred outside a cafe near the Ismailovsky market in the east of the city, he said. (Reporting James Kilner; Editing by Alison Williams)

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