Police in San Francisco have released video footage of a man and woman they want to trace in connection with the theft of a cello from the San Francisco Conservatory of Music, reports KTVU. The well-dressed couple, who investigators have dubbed 'Bonnie and Clyde', were seen entering the conservatoire, checking lockers to find one that wasn't secured, and then fleeing the building with a cello, via a fire door.

The stolen cello belongs to 23-year-old Adam Young, who has played it since the age of 11. The cello case also contained a binder of music that Young had arranged for the quartet he plays in. A reward has been offered for the safe return of the instrument

Last May a man was arrested for stealing a student's $23,000 violin from a practice room at the conservatoire.