Noelle Bush, the daughter of Florida Gov. Jeb Bush and a niece of President George W. Bush, is under investigation for cocaine possession while attending a drug treatment center, Orlando police said.
Noelle Bush, 25, has had several brushes with the law over drugs this year and is serving a mandatory term at a drug rehabilitation center in Orlando.
Police were called to the center on Monday evening to investigate a complaint that Noelle Bush "was in possession of two grams of a small, white rock substance" and a field test showed it was cocaine, spokesman Sgt. Orlando Rolon said.
The matter remained under investigation and Noelle Bush has not been charged. Rolon said she might not face charges if the judge overseeing her case decided to intervene.
Noelle Bush spent three days in jail in July after violating the terms of a drug treatment program. The treatment was ordered after she was arrested in the state capital Tallahassee in January for allegedly trying to buy the anti-anxiety drug Xanax using a false prescription.
Gov. Bush, who is campaigning for re-election, learned of the incident on Tuesday morning.
"This is a private issue, as it relates to my daughter and myself and my wife." he told reporters. "The road to recovery is a rocky one for a lot of people who have this kind of problem."