Actress Lindsay Lohan appears in court at the Beverly Hills Municipal Courthouse in Beverly Hills, California in this July 20, 2010 file photo.[Photo/Agencies]

Actress Lindsay Lohan began a sentence for jewelry theft under house arrest on Thursday, but is likely to serve only about 35 days of her four month term, officials said.

Lohan, 24, turned up at a Los Angeles jail at 5 a.m. on Thursday, was deemed eligible for home confinement, fitted with an electronic monitoring ankle bracelet and released to her home within an hour, Los Angeles Sheriff's department spokesman Steve Whitmore said.

"Ms. Lohan will be under the supervision of the sheriff's department and her release date is expected to be around June 29," Whitmore said. "She will serve about 35 days on home detention."

The "Mean Girls" actress was sentenced two weeks ago to four months jail and 480 hours community service after pleading no contest to stealing a $2,500 gold necklace from a store in January.

It was not immediately clear how much time she would be confined to house arrest. But Whitmore said earlier this month she would likely serve 16-17 days at home under programs for nonviolent offenders, good behavior and because of overcrowding in the city's jails.

Lohan has already started her community service at a women's jail.

Lohan has been in and out of jail and drug and alcohol rehab for the past four years following a 2007 arrest for drunken driving and cocaine possession.

Her troubles have derailed her once promising Hollywood career, but she was cast in April in an upcoming movie about New York crime boss John Gotti, alongside actors Al Pacino and John Travolta.