Hopes for a quick bipartisan deal on a massive stimulus package quickly unraveled on Sunday as lawmakers remain deadlocked on several key provisions.

A meeting between the four congressional leaders and Treasury Secretary Steven Mnuchin failed to break the stalemate as Democrats voiced concern that Senate Majority Leader Mitch McConnell (R-Ky.) is trying to jam them with a bill they have not signed off on.

Senate Minority Leader Charles Schumer (D-N.Y.) said as he left the meeting that they did not have a deal.

“We continue to talk,” he said.

House Speaker Nancy Pelosi (D-Calif.) said after the meeting that House Democrats would offer their own stimulus package that she hoped would be “compatible” with the Senate’s package.

“I don’t know about Monday but we’re still talking,” Pelosi told reporters, referring to the preferred GOP timeline for passing a bill.

The impasse comes as the Senate will hold a first procedural vote at 3 p.m., where bipartisan support will be needed to move forward.

Democrats will meet at 1 p.m. to discuss their strategy. McConnell has given no indication that he will delay the vote, potentially forcing Democrats to either move forward with the GOP leader’s plan or block the bill from advancing. Schumer did not say as he left the meeting if Democrats would allow the bill to move forward.

McConnell told reporters after the meeting that he would move forward as planned with the scheduled 3 p.m. procedural vote, and still wants to pass a stimulus package on Monday. He described the talks as "very close," but acknowledged that people were still "elbowing and maneuvering for room."