Bermet Akayev, believed to be behind recent public disorders in a Kyrgyz province, will remain under constant police surveillance in her residence pending trial, the prosecutors said.
The only member of the Akayev family to have returned to the country after her father's deposition in 2005, Bermet was banned in late April from running in a parliamentary by-election in the northern Kemin province, on the grounds that she had spent the past two years outside Kyrgyzstan.
In response, some 2,000 supporters besieged the regional court, demanding that their candidate be allowed to run. The court's chief judge, Usenbek Sarymsakov, reversed the ban, but later reinstated it, saying he had been pressured to rule in Bermet's favor.
The woman is formally charged with obstruction of justice, and may face up to two years of imprisonment if found guilty. She denies any involvement, and says the case is politically motivated.
Bermet, 35, has also been questioned in a case against several of her relatives, which was opened after Askar Akayev fled the country in 2005 to avoid persecution for alleged corruption.
Bermet's husband, Adil Toigonbayev, and her brother, Aidar Akayev, are charged with embezzlement. Her mother, Mairam, headed a charity foundation suspected of having been used as a channel for illegal money transactions.