An explosion and blaze sparked by fireworks have killed at least 100 people at a Hindu temple in the Indian state of Kerala, police say.
The fireworks, which were to be used to celebrate a local new year festival, exploded about 03:30 (22:15 GMT Saturday), local media say.
A building at the temple then collapsed, causing many of the deaths. More than 200 people were injured.
Indian Prime Minister Narendra Modi is travelling to the scene.
He tweeted that the accident in the coastal town of Paravur was “heart-rending and shocking beyond words”.
Thousands were gathered at the temple complex for the festivities when the fire started. Television images showed big clouds of smoke as fireworks went off in the night sky.
There were scenes of chaos as people tried to rescue the injured, and emergency teams were using bulldozers to clear the area in search of survivors.
Many of the injured were in critical condition and were being treated at the government medical college in Thiruvananthapuram, the state capital.
Kerala police chief TP Senkumar said many of the dead were charred beyond recognition and would have to be identified by DNA tests.
The impact of the blast was felt in houses up to a kilometre away.
“Huge pieces of concrete were flying through the air,” said resident Jayashree Harikrishnan. “Chunks landed in our yard.”
Kerala’s Home Minister, Ramesh Chennithala, has ordered an investigation.
The Chief Minister of Kerala, Oommen Chandy, is also due to visit the scene.
The fireworks had been stored ready for celebrations on Thursday of Vishu, a Keralan festival marking the Hindu new year.
However, the local district magistrate had denied permission for the display to be held this year because of safety concerns and complaints from residents.
The police are planning to take action against the temple administration and the contractors who were putting on the firework display.
Fireworks and firecrackers are commonly used at temple festivals and other public events and accidents are not uncommon.
Kerala is in the midst of an election for a new state assembly but political parties have called off campaigning as a mark of respect for the victims.