Dubai's port operator says an oil tanker is on fire after striking a container ship in a shipping channel at the city's Jebel Ali Port, AP reported
DP World spokeswoman Sarah Lockie says no casualties have been reported. Authorities have been alerted.
She says crews are trying to contain the blaze and determine how to clear the channel.
Clouds of smoke could be seen rising from the area of Tuesday's collision. The port is on the southwestern end of the city, in the direction of Abu Dhabi.
Lockie says the container vessel is a medium-sized "feeder ship."