A constable from the Versova police station sustained serious injuries after his motorcycle was knocked down by a speeding car in Ghatkopar on Wednesday.
The incident captured on a CCTV camera took place when the constable, Pramod Devkule (38), was returning home after a night shift.
As per Pant Nagar police, Devkule was heading towards his residence at Chirag Nagar in Pant Nagar police quarters when the accident took place around 3.30 am.
Police have arrested one Amir Shaikh, 20, a driver with a cab service in this connection.
Devkule has been admitted to a South Mumbai hospital in a critical condition.