Ousted Nissan boss Carlos Ghosn left his Tokyo residence after a private security firm hired by Nissan Motor Co stopped monitoring him, three sources familiar with the matter told Reuters on Saturday.

Ghosn has become an international fugitive after he revealed on Tuesday he had fled to Lebanon to escape what he called a “rigged” justice system in Japan, where he faces charges relating to alleged financial crimes.

Nissan had hired a private security company to watch Ghosn, who was on bail and awaiting trial, to check whether he met any people involved in the case, the three sources said.

But his lawyers warned the security company to stop watching him as it would be a violation of his human rights, and Ghosn was planning to file a complaint against the company, the sources said.

The security company stopped its surveillance by December 29, the sources said.

One of his lawyers, Junichiro Hironaka, told reporters in November that they were considering steps to prevent people from stalking Ghosn.

A Nissan spokesperson declined to comment.

Japanese public broadcaster NHK, citing investigative sources, said a surveillance camera by the authorities in Ghosn’s home showed him leaving alone around noon on Sunday, and did not show him returning.