Nigeria has deported dozens of foreigners, including 50 Chinese nationals, in a major crackdown over the last week on one of the "largest foreign-led cybercrime syndicates", the country's anti-graft agency has said.

Beijing's top envoy in New Delhi on Thursday expressed strong support for India, citing the steep US tariffs imposed against the country, and called for "teamwork" and "collaboration" between the world's two most populous nations in standing up to the "bully".