Those charged include owners Delwar Hossain and his wife, Mahmuda Akter, as well as 11 factory managers, security guards and engineers, Babul said.
A court will decide on Dec. 31 whether to accept the charges and allow a trial to proceed.
“The managers and security guards misguided the workers by saying that it was nothing but a part of a regular fire drill when the blaze broke out,” Babul said.
“So the workers went back to work after the fire alarm went off, but they got trapped as the mangers locked the gates.”
Bangladesh is the world's second-largest garment manufacturer after China and earns more than $20 billion a year from exports, mainly to the United States and Europe.