Chikkaballapur, July 3 -- A worker was killed following an explosion that occurred during drilling operations at the Echo Sand Quarry located on Hirenagavalli Hill near Peresandra in Karnataka's Chikkaballapur taluk, police said.

The deceased has been identified as Nagendra, age 35, a native of Dharmavaram in Andhra Pradesh.

According to police, the explosion took place on Wednesday evening during drilling operations at the quarry, leaving Nagendra seriously injured. He was shifted to Victoria Hospital in Bengaluru for treatment, where he later succumbed to his injuries.

Police said a case has been registered at Peresandra Police Station, and further investigation into the incident is underway.

Meanwhile, on Wednesday, three people, i...