July 24, 2006  -- Someone hacked into Lindsay Lohan's BlackBerry to send out harassing messages to the people on her buddy list, but it wasn't Lohan's rival heiress Paris Hilton.

Leslie Sloane Zelnik, the pop star's spokeswoman, said the "disgusting and very mean messages" had everyone in her camp thinking that Hilton had been involved.

The two have had several confrontations in recent months, including a spat at Hollywood hot spot Hyde, where the two engaged in an argument in front of other patrons.

"Some people think Paris may have been involved because the wording of the messages sounds very familiar," Zelnik told The New York Post's Page Six.

"They weren't," she now said. "We now have her lawyers looking into it."

Hilton had her own problems with portable electronics two years ago, when her T-Mobile account was hacked and private messages were put on the Web.

That incident exposed juicy tidbits that included her belief that Jessica Simpson, who was then married to Nick Lachey, had a crush on Justin Timberlake.

Hilton's representative Elliot Mintz further denies that his client was involved in the apparent invasion into Lohan's buddy list.