New Delhi, India (CNN) -- At least 25 people were killed when a fire ripped through a fireworks factory in southern India Wednesday, police said.
The blaze at a factory in the town of Sivakasi in Tamil Nadu state left 50 others injured, District Police Chief Ajmal Godha said.
Godha said emergency crews inside the gutted unit did not find anyone trapped inside.
The factory employed between 250 and 300 workers; most managed to escape, Godha said.
Police will investigate the cause of the fire, officials said.
Sivakasi, in Tamil Nadu's Virudhunagar district, is a hub of the country's fireworks industry.
The fireworks are a large part of the celebrations for Diwali, the country's biggest Hindu festival, in November.