Rajnandgaon: A 50-year-old worker was killed when an oxygen pipeline exploded at a factory in Chhattisgarh's Rajnandgaon district, police said today.

The mishap occurred when the victim was opening a valve of the pipeline in Simplex Engineering Factory at Tedesara village under Somni police station limits yesterday, police said. The deceased was identified as Jawahar Singh, a native of Bihar. As per preliminary investigation, Jawahar was working along with other labourers in the plant.