Four liquefied natural gas tankers controlled by Qatar were heading into the Strait of Hormuz, despite a fall in ship traffic after Iran announced that it had again closed the waterway over the weekend, shipping data showed, according to Reuters.

The tankers — Wadi Al Sail, Mekaines, Al Sadd and Mesaimeer — were entering the strait via the Iranian route for the first time since the US-Israeli war with Iran started, shiptracking data from analytics firm Kpler showed.

QatarEnergy, whose LNG exports have been heavily curbed since the war began on February 28, did not immediately respond to a request for comment.

The Marshall Islands-flagged dry bulk vessel Summit Success also entered the Gulf, LSEG data showed.