Seychelles President Wavel Ramkalawan declared a state of emergency on Thursday, ordering all citizens except essential workers to stay at home, after a blast at a store and flooding due to heavy rainfall, the presidency said.

"Following an explosion at the CCCL explosives store that has caused massive damage… and major destruction caused by flooding due to heavy rains, the President has declared a State of Emergency for today the 7th December," it said in a statement.

"All schools will be closed. Only workers in the essential services and persons traveling will be allowed free movement. This is to allow the emergency services to carry out essential work," the statement added.

The explosion occurred in the Providence industrial area in Mahe, the largest island in the Indian Ocean archipelago, and caused huge damage there and to surrounding areas, the president said, without elaborating further.

"The Seychelles International Airport is still operational and ferry services between islands are operating for visitors," the tourism-dependent country said on its official Visit Seychelles account on X.

A former British colony, the Seychelles is made up of 115 islands and according to 2021 World Bank data is the richest African country as measured by per capita gross domestic product, with tourism and fishing the biggest contributors to the economy.

However, the high cost of living means that around 40 percent of the country's 98,000 inhabitants live in poverty.

The archipelago is famous for its idyllic white beaches and high-end tourism.