Police have arrested five persons for allegedly kidnapping a 38-year-old doctor and extorting Rs 30 lakh from him last year in Maharashtra's Thane district, an official said. The doctor was on his scooter on October 22, 2022 when a man took lift from him. After they travelled some distance, the man and his associates, who also arrived there, allegedly took the doctor forcibly in a car to a forest at Saralgaon in Murbad area, covered his eyes and beat him up.