A crew in the Red Sea was forced to abandon ship after it was hit by Yemen’s Houthi rebels on Sunday, the first attack of its kind since President Trump announced a truce in May after he said the group promised to stop attacking Middle Eastern waterways.

Two commercial vessels targeted in 24 hours raise fears of an escalated campaign against Israel-linked shipping.

The attack on the Magic Seas, a dry bulk carrier owned by Greece’s Stem Shipping, was the first on a commercial vessel since December by the group, which is backed by Iran. It was followed almost immediately by Israeli strikes on a number of Houthi-held ports in Yemen.