Mayor de Blasio announced Saturday morning that city schools would be closed for the remainder of the school year. But that decision was thrown into doubt about two hours later, when Governor Cuomo said it wasn't the Mayor's call to make in the first place.

"I announce today that the New York City public schools will remain closed for the remainder of this school year,” said Mayor de Blasio.

The announcement seemed definitive, given the Mayor's control over the city school system. But then at his own briefing later Saturday morning, Governor Cuomo was asked about the decision.

"There has been no decision. That's the Mayor's opinion," said Governor Cuomo.

Cuomo asserted his own legal authority. And indeed, the state requires 180 days of school instruction and so would have to approve any further school closures; otherwise the city could lose state aid. But city officials pushed back.

"The City of New York has more than 'opinions' about its school system, which it runs," said the mayor's communications director, while his press secretary tweeted:

"We wanted parents and teachers to have certainty as early as possible. When the Mayor made the call, he informed the Governor (called and texted). Our staff also spoke. We told the public. Those are the facts. Let's keep kids and their parents first."

"He didn't close them and he can't open them. It happened on a metropolitan-wide basis," said Cuomo.

Cuomo said any decision on city schools will be made in coordination with Long Island, Westchester, and possibly upstate counties as well as neighboring states. What happens next is unclear, but it would come as a shock if Cuomo overturned the Mayor's decision. He's signaled no intention of re-opening schools, only that it's his decision to be made on his timeline.

"It's not going to be decided in the next few days because we don't know. I can't tell you what June is going to look like. I can't tell you what May is going to look like,” said Cuomo.

In a later interview, the Mayor seemed unmoved by Cuomo's comments.

"My responsibility is not to another elected official; my responsibility is to those kids,” said the mayor. "I run the school system under mayoral control of education, with the chancellor. We are the people charged with protecting our kids, our families. We're saying this is the right direction to go, and this is what we're going to do."