Iran has rejected another round of peace talks with the U.S., just hours after President Donald Trump said the talks in Pakistan would be Iran's "last chance" to sign a deal, or "the whole country is getting blown up."

Trump made the comments to Fox News' Trey Yingst Sunday as the Iran war enters its 50th day.

3:45 p.m. ET: Trump said the U.S. forcibly seized an Iranian-flagged cargo ship Sunday that tried to get around its naval blockade.

In a post on Truth Social, Trump said a U.S. Navy guided missile destroyer warned the ship in the Gulf of Oman to stop, but it did not.

"Our Navy ship stopped them right in their tracks by blowing a hole in the engine room," Trump wrote.

He said U.S. Marines had custody of the cargo ship, named Touska, and were "seeing what’s on board!"

3:10 p.m. ET: Iran has reportedly rejected a new round of peace talks with the U.S. as President Trump ramps up threats to "knock out every single Power Plant, and every single Bridge."

According to Reuters, Iran state media reported that the country would be absent from new peace talks in Pakistan, stemming "from what it called Washington's excessive demands, unrealistic expectations, constant shifts in stance, repeated contradictions, and the ongoing naval blockade, which it considers a breach ​of the ceasefire."

On Truth Social Sunday, Trump said the U.S. is "offering a very fair and reasonable DEAL, and I hope they take it."

President Donald Trump says that U.S. negotiators will be in Pakistan on Monday for talks with Iran.