Iran’s Revolutionary Guards have seized an Israeli-linked cargo ship in the Strait of Hormuz, days after Tehran said it could close the crucial shipping route and warned it would retaliate for an Israeli strike on its Syria consulate.

Iran’s state-run IRNA news agency reported that a Guards helicopter had boarded and taken into Iranian waters the Portuguese flagged MSC Aries, saying it was linked to Israel.

MSC, which operates the Aries, confirmed Iran had seized the ship and said it was working “with the relevant authorities” for its safe return and the wellbeing of its 25 crew.

MSC leases the Aries from Gortal Shipping, an affiliate of Zodiac Maritime, Zodiac said in a statement, adding that MSC is responsible for all the vessel’s activities. Zodiac is partly owned by Israeli businessman Eyal Ofer.

Video on Iranian news channels purporting to show the seizure included a figure abseiling from a helicopter onto a ship. Reuters was able to verify that the ship in the video was the MSC Aries but not the date it was recorded.