LOS ANGELES -- Police say Paris Hilton's younger brother, Conrad Hilton, has been arrested at his ex-girlfriend's Hollywood Hills home on suspicion of violating a restraining order.

Officer Liliana Preciado says the woman called police Monday afternoon to say Conrad Hilton was trying to gain access to her property.

The 21-year-old was taken into custody without incident. He was later released on $5,000 bail.

Preciado says Hilton was under a court order preventing him from contacting his ex-girlfriend or members of her family.

His attorney, Robert Shapiro, did not immediately return a phone message seeking comment.

Hilton is the great-grandson of hotel magnate Conrad Hilton. He was sentenced this month to community service, a fine and mental health and substance abuse treatment for disrupting a British Airways flight last July.

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This story has been corrected to show that Hilton has been sentenced in the airline disruption case.