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".

Sheikh Hasina's son, Sajeeb Wazed, who spoke on behalf of the family, said they were targets of a political witch hunt in Bangladesh.

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.

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,

Hasina, 77, has been living in exile in India since Aug 5 when she fled the country amid the student-led protests that toppled her 16-year regime.

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

Bangladesh's anti-corruption authority has begun investigating former PM Sheikh Hasina and relatives over a USD 5 billion misappropriation at the Rooppur nuclear power plant. Involving Russian and Indian collaboration,