MUMBAI: A 56-year-old man from Dharavi, who tested positive for Covid-19, succumbed on Wednesday. He had fever since March 23 and had gone to a local doctor for a check-up, but was admitted to Sion hospital few days back which respiratory ailments. Sion hospital was searching for a ventilator in other hospitals so that he could be shifted but he passed away before that.Civic officials said he had no travel history and ran a garment store. They said he stayed in an SRA building in Dharavi. BMC put seven of his family under home quarantine and their medical tests will be conducted on Thursday. His building has been marked as a containment zone. Police have been deputed to restrict entry/exit of residents, said civic officials. The building has 308 flats and 91 shops. Officials said screening of all residents will be conducted. Civic officials assured food and other stuff to residents, requesting them to stay at home.Officials said this was probably the first positive case in the densely populated area. The source from where he caught the infection is yet to be traced, said officials.Acting dean of Sion Hospital Dr Pramod Ingale said he was admitted on March 29 with a respiratory ailment. "We kept him in the designated Covid-19 ward. His condition got critical and he went on acute respiratory distress syndrome," he said. The dean said they had started looking for a bed with ventilator, but before they could shift the patient, he succumbed around 6.30pm on Wednesday.