[Blackberry]

Sources tell star the good charlotte front man, 28, has such a temper that he's under investigation by the beverly hills police department for reportedly hitting two photographers outside of tony mr. chow restaurant in l.a. on march 4. "he hit [photographer] jody [santos] in her breast area, and that is completely unacceptable," says videographer perry farinola, who plans on filing a police report after also being violently shoved by joel that night.

this isn't the first time joel reportedly displayed his short fuse. he is said to have gotten into fights with crazy town's front man, shifty shellshock, and with another videographer, josh levine. in fact, his hot temper was one of the reasons singer hilary duff, 19, dumped him, a source tells star.

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