The probe against a hospital management firm for allegedly providing forged documents to bag contracts to operating jumbo centres during the Covid-19 outbreak and causing death by negligence has been transferred to Mumbai Police`s crime branch, an official said Wednesday.

The investigation was hitherto handled by the Mumbai Police which had registered a First Information Report (FIR) against the firm and four persons associated with it on a complaint lodged by former Bharatiya Janata Party (BJP) MP Kirit Somaiya.