Up to five units of Dublin Fire Brigade are fighting a blaze at a business park in the south-west of the city.
The alarm was raised at around 6.30am after a number of premises caught fire at the Glebe Business Park on Rathcoole's Main Street.
A spokesman for Dublin Fire Brigade said there were no injuries reported but personnel were still working to bring the fire under control. "We still have four or five appliances at the scene," he said.