NEW YORK (AP) -- Art collectors are suing Keith Haring's foundation in New York, saying it has cost them at least $40 million by refusing to authenticate about 90 works by the late artist.
The federal lawsuit was filed Friday in Manhattan.
Haring started the foundation shortly before he died of AIDS in 1990.
The lawsuit says the foundation stopped authenticating his works in 2012. It alleges the goal was to limit the number of authenticated works so they would be worth more money.
The lawsuit was brought by collectors who began buying works in 2007 from two of Haring's friends.
Lawyers for the Haring foundation did not immediately respond to comment requests.
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