Awwal 17, 1432 H / April 21, 2011, SPA -- Germany's biggest bank admitted Thursday that a mega art theft it reported to police in February never happened: the two paintings had been hanging in one of its offices all along, according to dpa. The works are valuable early watercolours by German-born Joseph Beuys (1921-1986), one of the greatest painters of the 20th century, both entitled Schwaene. Deutsche Bank said its packing lists became muddled while it was moving 4,500 artworks into its Frankfurt headquarters after the skyscrapers had been refurbished. "The pictures are at one of our offices in the Americas," a spokesman for the bank said, declining to name the city "for security reasons." Most of the Deutsche's 56,000-item art collections, one of the corporate world's most valuable, is on display at its branches.