(The Scotsman) A Brazilian doctor – charged with killing seven patients to free up beds at an intensive care unit – may have been responsible for as many as 300 deaths, a health ministry investigator has said.

Prosecutors said Dr Virginia Soares de Souza and her team administered muscle relaxants to patients, then reduced their oxygen supply, causing them to die of asphyxia at Evangelical Hospital in the southern city of Curitiba.

De Souza, a 56-year-old widow, was arrested last month and charged with seven counts of aggravated first degree murder. Three other doctors, three nurses and a physiotherapist have also been charged with murder.

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