Navigation signals from more than 900 vessels in the Strait of Hormuz and the Persian Gulf went awry over the weekend, creating confusion in the shipping chokepoint as the fighting between Iran and Israel intensified.

Several social media users cited photos to claim that three ships were on fire in the Gulf of Oman, near the Strait of Hormuz

Oman and Qatar were leading efforts to begin ceasefire talks, while mediators said Iran was open to resuming nuclear negotiations if Israel’s attacks stop.