The US military took custody of an Iranian-flagged container ship that attempted to get past an American blockade near the strait of Hormuz, Donald Trump announced on Sunday, leading Tehran to accuse him of violating the fragile ceasefire between the countries.

In a social media post, Trump said that an “Iranian-flagged cargo ship named TOUSKA” tried to get past the US naval blockade, “and it did not go well for them”.

Trump said that a US navy guided missile destroyer had warned the Touska to stop in the Gulf of Oman, but the vessel did not. “[Our] Navy ship stopped them right in their tracks by blowing a hole in the engine room,” Trump said, adding that US marines now have custody of the vessel.

“The TOUSKA is under U.S. Treasury Sanctions because of their prior history of illegal activity,” Trump added. The ship is on the treasury department’s list of sanctioned vessels.