DUBAI, United Arab Emirates (AP) — The search for those missing after Yemen’s Houthi rebels sank a ship in the Red Sea has ended as at least four people are presumed dead and 11 others remain unaccounted for, the private security firms involved said Monday.

The announcement came as satellite photos show long, trailing oil slicks from where the bulk carrier Eternity C sank, as well as another where the sinking of the bulk carrier Magic Seas by the Iranian-backed Houthis took place.

Both ships were attacked over a week ago by the rebels as part of their campaign targeting vessels over the Israel-Hamas war in the Gaza Strip that’s upended shipping in the Red Sea, through which $1 trillion of goods usually passes a year.