India, April 14 -- Four workers were killed and at least 15 others injured in an explosion at a power plant in Chhattisgarh's Sakti district on Tuesday, police said.

According to preliminary information, the blast occurred in a boiler tube at a power plant in Singhitarai village in the afternoon.

Sakti superintendent of police (SP) Prafull Thakur said four workers died in the incident, while 15 others sustained injuries. "Rescue operations are going on and the toll can rise, " the SP said.

Local administration and police teams rushed to the spot soon after receiving information and initiated rescue operations.

The injured were shifted to nearby hospitals for treatment, while efforts were underway to trace some workers feared to have b...