India, March 17 -- The United States Embassy in India on Tuesday said it is "aware of the situation" after India's premier anti-terror agency, the National Investigation Agency, arrested seven foreign nationals, including an American citizen, for allegedly using India as a transit route to enter Myanmar illegally and train armed groups.

"We are aware of the situation, but for privacy reasons we cannot comment on cases involving US citizens," the embassy said in a statement.

The American national has been identified as Matthew VanDyke. The six others arrested are Ukrainian nationals, whose detention was confirmed by Ukraine's foreign ministry.

The ministry said its diplomatic mission is in touch with the families of those detained and i...