A man arrested at the site of the controversial Corrib gas terminal was released without charge by gardaí earlier today.
The man was arrested this morning when between 250 and 300 protesters gathered at the Shell site in Co Mayo for what has been billed a National Day of Action.
The campaign group Shell To Sea said people from all over the State attended the protest against the building of the refinery by oil giant Shell at Bellanaboy.
A convoy of around 30 buses, vans and trucks carrying workers made its way to the Bellanboy site after 7.30am amid a heavy Garda presence.
Protesters split into two factions - those who wanted to block the workers, and those who made their way to a rally.
After the workers gained access to the site, the remaining protesters rejoined the others.
Tracey Ryan, from the Shell To Sea group, said: "What is happening in Mayo is that the needs of big business are being prioritised over the needs of a community. If it can happen here it can happen in any community."
Another group member, Eve Campbell, claimed: "Only 27 per cent of the refined gas is to be sold to Bord Gáis at full market price. This leaves the rest to be sold to private customers in competition with Bord Gáis but using the Bord Gáis pipeline."
Earlier this week, gardaí investigated death threats made against Government Minister Noel Dempsey.
Two phone calls were made to the Department of Communications, Marine and Natural Resources after a radio interview where the Minister said Sinn Féin president Gerry Adams and Democratic Unionist leader the Rev Ian Paisley were more reasonable than those opposed to Shell's Corrib gas project.
Shell To Sea said it totally condemned the threats.
