A volcano has erupted on an island off Yemen's coast, spewing lava and ash hundreds of metres into the air, Canadian naval officials and the Yemeni state news agency said.
"The lava is spewing hundreds of feet into the air, with the volcanic ash also [rising] a thousand feet in the air."
Saba said a military garrison on the island was being evacuated.
The Canadian armed forces said it was trying to locate nine people believed to be at sea after Yemen's coast guard requested help.
The Nato fleet was sailing towards the Suez Canal when it spotted the eruption. The government of Yemen asked Nato to assist in the search for survivors and the closet ship, the HMCS Toronto, is heading towards the island.