Sensitive talks between U.S. and Chinese delegations over tariffs that threaten to upend the global economy ended after a day of prolonged negotiations and will resume Sunday, an official told The Associated Press.

The meetings between top U.S. and Chinese officials in Geneva represent the first potential efforts to end a trade war that has frazzled financial markets.

Trade talks in Geneva between the United States and China have ended for the night but will continue on Sunday, a source familiar with the matter told Reuters. China's delegation is headed by Vice Premier He Lifeng,