Bangladesh has sent a formal request to India to extradite ousted Prime Minister Sheikh Hasina, who fled to New Delhi in August amid the student-led protests that ended her 15 years in power, the country’s foreign affairs adviser said Monday.

Md Touhid Hossain told reporters at his office in Dhaka that the country has sent a diplomatic note to India’s Foreign Ministry. “We have informed India about our request to bring her back for the judicial process,” Hossain said. He didn’t give details.

India’s Foreign Ministry said it had received Bangladesh’s request but didn’t immediately provide details.

Hasina’s son, in a statement posted on his Facebook page, criticized the move hours after Monday’s request by the interim government, questioning the process and credibility of a tribunal that is dealing with the charges against her.

Hasina fled to India after being ousted in a mass uprising in July and August in which authorities say hundreds of people were killed and thousands more injured. She faces many court cases over the deaths, including some on charges of crimes against humanity.

The Dhaka-based International Crimes Tribunal has issued arrest warrants for Hasina and her close aides, and the government has sought help from the international police organization Interpol for her arrest.

The interim government also has promised to try Hasina and others in her administration for alleged crimes involving the uprising against her and has invited the United Nations to help investigate the killings.