Geneva, May 11 -- Talks between the US and Chinese delegations over tariffs that threaten to turn the global economy topsy-turvy ended after a day of prolonged negotiations and will resume on Sunday, a source briefed on the meetings confirmed to CBS News.

There was no immediate indication whether any progress was made on Saturday during the more than 10-hour meeting between Treasury Secretary Scott Bessent and Chinese Vice Premier He Lifeng in Switzerland.

The talks, which could help stabilize world markets roiled by the US-China standoff, have been shrouded in secrecy and neither side made comments, as per CBS News.

Bessent indicated last week that the initial discussions were likely about "de-escalation, not about the big trade deal....