In the letter, CPI(M) general secretary Sitaram Yechury lauded the scientists for developing anti-satellite weapon A-SAT and said the fact that India had developed this capability was announced by then chief of the DRDO in 2012.
"Such a mission should normally be announced to the nation and to the world by the relevant scientific authorities like the DRDO. Instead, the Indian Prime Minister has taken the route of an address to the nation in making this announcement," Yechury said.
"This announcement comes in the midst of the ongoing election campaign where the prime minister himself is a candidate. This is clearly a violation of the Model Code of Conduct," he added.
echury sought to know if the Election Commission was informed of such an address to the nation by the prime minister.
Did the Election Commission consider and permit such an address to the nation by the Prime Minister?
I am sure that the entire country would like to know the special reasons why the Election Commission permitted the achievements of Indian scientists to be politically coloured during the course of the general elections," he said.