Singer Diana Ross has served her two-day jail time for drink driving in her home town of Greenwich, Connecticut.
Diana Ross was treated like any other prisoner, police said
The star, 59, was given the sentence on Monday after pleading "no contest" to driving under the influence of alcohol in Tuscon, Arizona, in December 2002.
By Friday, Greenwich police confirmed she had served her time - but gave few exact details.
"Ms Diana Ross completed 48 hours of detention incarcerated at the Greenwich police department," a spokeswoman said.
"Ms Ross was treated as any other female prisoner in accordance with department policy and procedures," the spokeswoman told BBC News Online.
The judge had ordered her to serve the sentence by 9 March, and Ross must also have at least 36 hours of alcohol abuse treatment before 9 August.
The former Supremes singer had been arrested after reports of a car swerving and driving on the wrong side of the road.
Tests showed she was two times over the legal alcohol limit.
Officers at the scene of her arrest reported that her eyes were watery and bloodshot and she fell over while being questioned.
As well as her success with The Supremes in the 1960s, Ross enjoyed solo hits in the 1970s and 1980s with songs like Ain't No Mountain High Enough, Upside Down and Endless Love.