President Trump and Mexican President Enrique Pena Nieto postponed plans for the Mexican leader’s first visit to the White House, after a testy phone call involving Trump’s push for a border wall, a US official said Saturday.

They “agreed now was not the immediate right time for a visit, but that they would have their teams continue to talk and work together,” according to the official.

The Washington Post, which first reported the delay, said the two leaders spoke for about 50 minutes Tuesday.

But the talk led to an impasse when Trump would not agree to publicly affirm Mexico’s position that it would not fund the wall’s construction costs.

A Mexican official said Trump lost his temper during the conversation, the newspaper reported.