A group of Japanese magicians sued TV broadcasters on Tuesday for revealing closely guarded secrets behind a series of coin tricks, a news report said.

Forty-nine magicians are seeking $16,000 in damages from Nippon Television Network Corp. and TV Asahi Corp. for airing shows last year that revealed how magicians perform tricks involving coins, according to Kyodo News agency.

In a suit filed with the Tokyo District Court, the magicians claim the programs infringed on their common property, Kyodo said.

The broadcasters "instantly deprived professional magicians of their assets," built up through the accumulation of ideas and long-term practice, magician Shintaro Fujiyama was quoted as telling a press conference.

Fujiyama apparently refused to talk in any further detail about the tricks that were exposed.