A blast at an explosives store wrecked buildings and caused massive damage to an industrial zone on the Seychelles' main island Mahe, officials said, prompting the president to declare a state of emergency on Thursday.
The blast shook the island as heavy rains triggered flooding which killed three people, the president told reporters on Thursday, calling for a minute of silence.
Footage broadcast on national television showed streets covered in deep mud and strewn with debris and uprooted trees.
"Following an explosion at the CCCL explosives store that has caused massive damage to the Providence Industrial area and the surrounding areas and major destruction caused by flooding due to heavy rains, the President has declared a State of Emergency for today December 7," President Wavel Ramkalawan's office said in a statement.
"Everyone is being asked to stay at home. All schools will be closed. Only workers in the essential services and persons travelling will be allowed free movement."
The government's official Visit Seychelles account on X said the international airport and ferries between its islands remained operational for tourists.
The Seychelles, a major tourist destination, is made up of 115 islands and is the least populous country in Africa with about 100,000 people.
Nearly 100 people have died since Wednesday after heavy rain lashed parts of India and Nepal, officials and media said, and the weather department has predicted more unseasonal rain for the region.
A tourist helicopter plummeted upside down into New York City's Hudson River on Thursday killing all six people on board, including a Spanish family with three children and the pilot, Mayor Eric Adams said.
A Pakistani-born Canadian businessman accused of helping to orchestrate the 2008 attacks in Mumbai, arrived in New Delhi on Thursday after the US extradited him in the first such transfer in a terrorism case.
Hezbollah lawmaker Hassan Fadlallah says the Iran-aligned group is ready to enter talks with the Lebanese government on a national defence strategy, with the focus on ensuring the removal of Israeli troops from Lebanon's territory.
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