Tragedy struck the renowned Ruia Hospital in Andhra Pradesh's Tirupati on Monday as 11 Covid-19 patients lost their lives due to an interruption in oxygen supply, Chittoor District Collector Harinarayan said.

The district authorities attributed the deaths to a five-minute delay in the arrival of an oxygen tanker at the hospital. However, with the oxygen supply restored immediately, a major tragedy was averted, the Collector said.