An accident involving a WagonR and a BEST bus at Ghatkopar's Ramabai Colony early Saturday morning seriously injured four people travelling in the cab. Three of them and the driver were in critical condition. Two of them are now recovering.

The accident occurred when Ola cab driver Chandan Mahanto, 24, tried to overtake a BEST bus (of the Shivaji Nagar depot) while the bus passengers were alighting at the Ramabai bus stop. Chandan was driving at a considerable speed to overtake the bus when it almost got crushed under it.