India’s government has asked Rahul Gandhi, the president of the main opposition Congress party, to respond to a complaint by a lawmaker from Prime Minister Narendra Modi’s party accusing him of holding dual British citizenship against Indian law.

Gandhi, the scion of the Nehru-Gandhi dynasty that has dominated Indian politics for much of its history since independence from Britain in 1947, is the main challenger to Modi in the 39-day general election that began on April 11.

Results will be known on May 23. Congress dismissed a notice sent to 48-year-old Gandhi, who has studied and worked in England, by the Ministry of Home Affairs on Monday as a “pathetic stunt that is not just frivolous but downright stupid”.

The notice was based on a letter from Subramanian Swamy, an outspoken member of parliament from Modi’s nationalist Bharatiya Janata Party (BJP). Swamy has for long cited what he calls annual reports and other documents from 2005, 2006 and 2009 of a UK-registered company, at which Gandhi was a director, as mentioning his nationality as British.

“You are requested to intimate the factual position in the matter to this ministry within a fortnight of the receipt of this communication,” B.C. Joshi, a director in the Indian interior ministry, said in the notice to Gandhi. Federal Home Minister Rajnath Singh, also a senior BJP leader, told reporters his ministry was following due process. India’s constitution says that any person voluntarily acquiring a foreign passport automatically loses Indian citizenship. (RTRS)