Updated: Valve malfunction led to disruption of oxygen supply to COVID-19 patients on life support. Share Article AAA Medical oxygen leaks from a storage unit at Zakir Hussain Municipal Hospital in Nashik on April 21, 2021. The leak interrupted oxygen supply leading to the death of several COVID-19 patients. | Photo Credit: PTI Valve malfunction led to disruption of oxygen supply to COVID-19 patients on life support. At least 24 COVID-19 patients on life support died after an oxygen tank leak disrupted the supply at Dr. Zakir Hussain Hospital in Nashik, Maharashtra, on Wednesday. Attributing the leakage to a valve malfunction, State Health Minister Rajesh Tope said a high-level probe had been ordered to ascertain if the incident was caused by negligence.