Yemen’s Houthis said they had carried out a military operation targeting two Saudi oil tankers, and maritime security reports said one of the vessels named by the group, the Saudi-flagged tanker Encelia, had been hit in the Red Sea, Reuters reports.

The Houthis identified the two tankers as “ENCELIA” and “LAYLA”, saying the vessels had violated a naval blockade imposed by the Iran-aligned group on Saudi Arabia. The Houthis said they targeted the tankers with a number of ballistic and cruise missiles.

A maritime security source said Encelia had transmitted a distress call via VHF, reporting it had been struck by a missile while operating at the outer port limits of Saudi Arabia’s Jizan, in the Red Sea, and was on fire.