GENEVA—Senior economic officials from the U.S. and China concluded their weekend trade talks Sunday without announcing details of their discussions to ease the continuing trade war between the countries.

The U.S. and China had “productive” trade negotiations over the weekend, U.S. officials said Sunday, without announcing any further details.

The White House said it was announcing a trade deal, without providing any details. Representatives from the U.S. and China had been meeting in Switzerland.