Three more persons were arrested on Sunday by Crime Branch officials in connection with the Puttingal Devi temple fireworks tragedy that claimed 108 lives.
The arrested were workers engaged by one of the contractors who conducted the pyrotechnic display at the temple on April 10, police said.
With this, the total number of persons taken into custody in connection with the mishap has risen to 16.
Out of the 16 arrested, seven are members of the temple's managing committee and others, workers of the contractors, police officials said.
Police have registered cases against them on charges including attempt to murder.