Sobolis left Russia just days before a court ruling imposing a two-year prison sentence depriving her of her freedom to leave the country came into force.
Interfax and other Russian media, according to unofficial sources, say that Sobolis left for Istanbul on Sunday evening, but there was a planned transfer to another plane.
Sobolis herself has not publicly provided information about her departure.
It has already been reported that on August 3, a Moscow court found Sobolis guilty of inciting violations of sanitary-epidemiological norms in Moscow during a January 23 protest and sentenced him to one-and-a-half years in prison.
Restrictions imposed on the console include staying at home from 10 pm to 6 am, prohibiting participation in mass events and leaving Moscow and the Moscow region.
Commenting on the judgment after the hearing, Sobolis emphasized that the case was considered fabricated.
“There are no victims in the case, no people in the case who have been ill with the coronavirus and went to protest at my call,” Soboly said.
She added that there was no evidence in the case file or in any video record that she or other defendants had called for a violation of sanitary norms. “There was a call to take to the streets. But it is impossible to incite a circle of indefinite people,” Sobolis said.
On January 23, uncoordinated protests by the authorities in support of the detained Navalny took place in Moscow and several other Russian cities.