Three more persons were foundpositive for coronavirus infection in Maharashtra, taking the number of such cases in the state to 52, state Health Minister Rajesh Tope said on Friday.Addressing a press conference in Mumbai, Tope said these new cases were detected in Mumbai, Pune and Pimpri- Chinchwad.Till Thursday night, 49 positive cases of COVID-19 had been found in the state, including a 64-year person, who died in Mumbai earlier this week.