After the news started spreading, Bingbing posted an apology on Weibo.
On Wednesday, the actress broke her silence and responded to reports claiming she had been fined almost $130 million for tax evasion.
She was not heard from again until China's state-run Securities Daily ( 證券日報), on September 6. reported Fan was "under control, and will accept the legal decision".
Fans and worldwide news outlets have been speculating about Fan Bingbing's mysterious disappearance for the past 3 months as the top star had been completely missing from the public eye since July 1. Update: Fan has also officially responded - see below.
She wrote in a letter: "There would be no Fan Bingbing were it not for the good policies of the party and the state, and the loving care from the public", Fan wrote.
"Today I'm facing enormous fears and worries over the mistakes I have made", she wrote, in part.
China has ordered Fan Bingbing, one of the country's best-known actresses, to pay taxes and fines amounting to hundreds of millions of yuan, state-run Xinhua News Agency reported, without elaborating.
The announcement gave no indication of Fan's whereabouts but indicated her agent is being held by police for allegedly obstructing the investigation.
The Middle Kingdom's highest-paid actress disappeared without a trace, and speculation had been building for weeks that it might be linked to a tax-evasion case.
It was previously reported Fan had been banned from leaving China, amid the investigation.
The Chinese actor Fan Bingbing, who has been missing for months amid rumours of possible wrongdoing, has been fined for tax evasion. She graced the red carpet at Cannes in May and was expected to star alongside Penelope Cruz in the movie "355".
She was accused of dodging her taxes by signing secret "yin and yang" contracts, which are public and private agreements in a bid to hide her real earnings, and avoid paying taxes. Fan Bingbing poses on a pier.