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San Francisco police are investigating a report of a kidnapping after three tourists from Germany told officers a taxi cab driver who picked them up in Fisherman’s Wharf briefly held them against their will.

The family — a 48-year-old woman, a 54-year-old man and their 11-year-old daughter — said the cab driver couldn’t find the restaurant they were trying to get to and drove them back to their hotel, said Officer Carlos Manfredi, a police spokesman.