Venice green Grand Canal

Police in Venice are investigating the source of a phosphorescent green liquid patch that appeared on Sunday in the city’s famed Grand Canal. The bright green area stretched from the Rialto Bridge to part of the Grand Canal.

The regional environmental protection agency ARPAV collected samples of the colored water with the help of the fire department. The agency's experts are now probing for the cause of the change in color. The Interior Ministry's representative in Venice, Michele di Bari, has called an emergency meeting to devise possible countermeasures.