The clean-up was continuing this morning after pranksters turned a Sheffield city centre fountain into a giant bubble bath.
Mischief-makers struck last night at one of the fountains at Barker's Pool.
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This morning, foam was still drifting across the square, past the front of City Hall, as a worker patiently tried to clean up the mess created.
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Last year, Sheffield Council turned the fountains red to mark World Aids Day, with people invited to take selfies to show their support for the cause.