Footage of the accident

Port operator DP World has launched an investigation after 10 people working at Dubai's Jebel Ali Port were injured when a container vessel knocked the wall of the harbour, causing a crane collapse.

The incident occurred late last week, but was not reported, according to DP World.

The container vessel collided with the harbour wall while berthing, striking the leg of a quay crane and causing it to fall. The impact also caused the dislocation of another crane from its rail track.

Nine people sustained minor injuries and another victim had a leg and arm fractured.

"Our first priority is the safety and wellbeing of our employees and all visitors to the port. DP World's terminal safety teams responded immediately to the incident and head office global safety teams joined them on site within five minutes," the company says.

"Working with external emergency response teams, the area was evacuated and an exclusion zone created. Safety drones were also deployed to survey the area, locate anyone in need of medical assistance and to ensure the safety of the responding crews," according to a statement.

"All necessary measures were taken to minimise disruption of service to customers during the emergency response activation and in the subsequent investigation phase."

The accident was captured on the port's CCTV and can be seen here.