US President Donald Trump says his deadline for Iran to open the Strait of Hormuz or face attacks on critical infrastructure is Tuesday evening, according to an interview he gave to the Wall Street Journal, reports Reuters.

“If they don’t do something by Tuesday evening, they won’t have any power plants and they won’t have any bridges standing, Trump told the Journal.

Trump later posted on social media, without mentioning Iran or any other details: “Tuesday, 8:00 P.M. Eastern Time!” Representatives for the White House could not be immediately reached for comment on the post.