Saudi Arabia issued temporary security alerts for residents of its Yanbu Governorate and Jazan Province early on Saturday before authorities announced that the potential threats had passed, as tensions with Yemen’s Houthi movement continued to rise.

The Saudi Civil Defence said the National Early Warning Platform had issued an alert for Yanbu Governorate in the kingdom’s western region, warning residents of a “potential danger.”

Authorities did not disclose the nature of the threat.

It was the second warning issued for the Red Sea governorate on Saturday.

A short while later, the Civil Defence announced that the situation had been resolved and the threat had passed.

A similar warning was later issued for residents of Jazan Province in southwestern Saudi Arabia.

The Civil Defence subsequently said the danger had also passed there.

No casualties or damage were reported in either area.

The alerts came hours after the Saudi-led coalition announced it had carried out what it described as a proportionate military response against Houthi military targets in Yemen’s western Hodeidah province.

The coalition said the operation was launched in response to Houthi attacks on commercial vessels in the Red Sea.

It stressed that Hodeidah Port was not targeted and that all Yemeni ports remained open to maritime traffic.

The Houthis, however, accused Saudi Arabia of conducting air strikes on Kamaran Island and telecommunications facilities in Hodeidah.

The latest developments mark a further escalation in tensions after the Houthis threatened to block Saudi-linked shipping in the Red Sea and the Bab El Mandab Strait.

Earlier this week, the group announced a ban on maritime navigation to Saudi Arabia, prompting the Saudi-led coalition to pledge a “firm and forceful” response and step up measures to safeguard commercial vessels transiting the strategic Bab El Mandab waterway.