Israel has carried out its first strikes against Houthi targets in Yemen since the Israel-Iran ceasefire, attacking ports and a power plant around midnight local time Sunday night into Monday morning.

An attack by Yemen’s Houthi rebels on a Liberian-flagged cargo ship in the Red Sea killed three mariners and wounded two others, a European Union naval force said Tuesday. The attack on the Greek-owned Eternity C follows the Houthis claiming they attacked another vessel on Sunday in the Red Sea,

Renewed clashes between Israel and Yemen’s Houthis, and Houthi attacks in the Red Sea, come amid talks over a potential ceasefire in Gaza.