NEW DELHI: At least two workers were killed and 20 injured at an explosion at pharmaceutical factory in Gujarat’s Bharuch district on Wednesday, PTI reported citing officials.“A powerful boiler explosion inside the factory triggered a massive fire,” PTI quoted Bharuch district collector Gaurang Makwana saying.“The intensity of the blast was so severe that the factory structure collapsed. While the majority of workers managed to escape, two of them got trapped and died. Their bodies were recovered from the rubble after the fire was doused. Nearly 20 workers escaped with minor injuries in the incident,” he added.According to the official, the incident occurred at around 2.30am at a factory in the Saykha GIDC area.Fire brigade, police, and forensic teams are inspecting the site after reports that a worker may be missing following the explosion.