Egypt has said that preliminary investigations suggest a drone caused a fire affecting two ships at Damietta Port on Wednesday.
The Egyptian cabinet said on Thursday the fire had been brought under control and no party had claimed responsibility for the incident.
Authorities are continuing investigations to determine what happened and to identify those responsible, the cabinet said.
It added that the necessary measures would be taken to protect the country's interests and security.
The fire affected two ships – a storage tanker and a vessel used to turn liquid fuel into gas.
Egypt's Petroleum Ministry said on Wednesday that the fire was under control, with no casualties reported. Petroleum Minister Karim Badawi inspected the site last night.
Kpler, an energy analytics firm, said the two ships had been damaged and “operations disrupted” at Damietta, one of Egypt's main terminals for importing gas. It said both were moved offshore as authorities assessed the situation.
Security company Ambrey also said the US-owned storage tanker had been hit by a drone.
The Energos Winter is a floating storage and regasification unit, owned by American company Energos Infrastructure. Its technical, safety and commercial operations are managed by Wilhelmsen Ship Management, also a US company.
Any drone attack in Egypt could bring about a serious escalation of the Middle East war.
The conflict has broadened in recent days as Yemen's Houthi rebels attacked Red Sea shipping before the US and Saudi Arabia carried out strikes on Iraq. The expansion followed a resumption of US and Iranian attacks across the Arabian Gulf, which were paused at the weekend after 13 consecutive nights of strikes.
