The U.S. government says there has been no contact between the U.S. and North Korea since the North launched a long-range rocket two weeks ago.

State Department Spokeswoman Victoria Nuland was asked during a news briefing on Thursday if U.S. officials contact the UN North Korean delegations regularly. Nuland responded that she doesn’t think there have been any contacts.

Her remarks suggest that the unofficial U.S.-North Korea diplomatic channel, known as the “New York channel,” has not been operating recently.