Four Greenpeace protesters staged an hour-long protest on the roof of Apple's European Headquarters in Cork today.

It is understood the protest was in relation to the use by IT companies of coal to power data centres for cloud computing.

The protesters went on to the roof of the Apple building at Hollyhill in Cork at around 7am.

Gardaí and the fire service were called. Protesters distributed leaflets to staff.

The protesters came down voluntarily after an hour.

It is understood to be part of a series of protests taking place across Europe.