Ousted Bangladesh Prime Minister Sheikh Hasina's son and adviser on Tuesday described allegations of corruption involving the family in the 2015 awarding of a $12.65 billion nuclear power contract as "completely bogus" and a "smear campaign".

Bangladesh's deposed leader Sheikh Hasina congratulated US President-elect Donald Trump following his reelection in November through a letter released by her Awami League party. Footage of an old meeting between the two,

Bangladesh has sent a formal request to India to extradite ousted Prime Minister Sheikh Hasina. She fled to New Delhi in August amid the student-led protests that ended her 15 years in power.

Indian companies are participating in constructing the Rooppur nuclear power plant, which is being built by Rosatom, Russia's state-run corporation in Bangladesh.

The interim government in Bangladesh has sent a diplomatic note and urged India to send deposed Prime Minister Sheikh Hasina back to Dhaka. The 77-year-old Awami League leader has been living in India since August 5 when she fled Bangladesh amid massive protests that brought down her 16-year-old regime and forced her to flee.

Sheikh Hasina and family face investigation over $5 billion embezzlement tied to Bangladesh's Rooppur nuclear plant. Allegations include fund transfers to Malaysia, prompting legal actions.

There was no immediate response to the allegations from Hasina, who has been living in India since she stepped down and fled from Dhaka in August.