Twentieth Century Fox is suing to block a white supremacist from using the Bart Simpson character on "Nazi Bart" T-shirts, an anti-discrimination group said.

According to the Anti-Defamation League, Fox's Licensing and Merchandising Corporation filed the suit Wednesday in U.S. District Court against Tom Metzger, leader of the White Aryan Resistance (WAR) group.The league said Metzger's group illegally infringed on the Bart character by advertising "Nazi Bart" T-shirts in its newsletter. The league also said the group advertised the T-shirts over its "Aryan Update" hotline.

"We are appalled but not surprised that Metzger has used Bart Simpson to promote his malicious bigotry, clearly aimed to influence millions of impressionable children who look on the cartoon character as a `hero,' " Abraham H. Foxman, the league's national director, said in a statement.

Metzger, who said he has not seen the lawsuit, said he's already stopped using the Bart character.