Former Nissan chief Carlos Ghosn has been released from jail in Tokyo after posting bail of 1 billion yen ($9 million) in cash Wednesday and after the court had rejected the prosecutors' appeal against the bail decision.

Television footage showed Ghosn wearing a mask, blue cap and workman’s uniform leaving the detention center surrounded by prison guards.

Under the bail conditions, Ghosn will be barred from leaving Japan, restricted from using his cell phone and be allowed to access a computer only in his lawyer's office during daytime hours on weekdays.

He will also be banned from contacting Nissan executives and other people with links to the allegations against him, the Kyodo news agency reported.

Ghosn could still attend board meetings at Nissan if granted approval by the court.

Overnight, Ghosn issued a statement in which he once again proclaimed his innocence of the charges, which include claims he under-reported his salary and sought to shift personal losses to Nissan's books.

"I am innocent and totally committed to vigorously defending myself in a fair trial against these meritless and unsubstantiated accusations," the 64-year-old said in a statement.

The auto executive is expected to go on trial later this year on charges he understated his income and abused his position by transferring personal investment losses to the Japanese carmaker.