Footage shows the rider being held down on the ground at one point.
Deliveroo says it's carrying out an urgent review into an apparent attack on one of it's riders in Dublin.
Footage, which has been shared online, show a group of people surrounding the delivery rider in Temple Bar on Monday night.
The rider is held down on the ground at one point.
Deliveroo told the Herald it's carrying out an investigation into the "appalling incident".