A 70-year-old worker was killed and three others were injured in an explosion caused by gas leak at a factory here on Saturday evening, police said.
The incident took place at Balaji Ice factory in Uppalwadi area.
It is suspected that ammonia gas leak in the storage tank caused the blast, said an official of Kapil Nagar police station, adding that it caused widespread damage and shattered the windows of nearby parked vehicles too.