A gas-cylinder explosion at a metal workshop in Haugaal, Lalitpur killed one and injured three people on Friday.

Dhruba Tamrakar died while undergoing treatment for the injuries that he succumbed in the explosion that occurred due to gas leak.

The injured ones are Suresh Tamrakar, 40; Rajesh Tamrakar, 42 and Kabina Tamrakar, 34. They are undergoing treatment at Patan Hospital.