Riot policemen clash with protestors during a demonstration against the Davos World Economic Forum (WEF) in Geneva Jan. 31, 2009. (Xinhua/Reuters Photo)

A protestor takes part in a demonstration against the Davos World Economic Forum (WEF) in Geneva Jan. 31, 2009. (Xinhua/Reuters Photo)

Riot policemen detain a protestor during a demonstration against the Davos World Economic Forum (WEF) in Geneva Jan. 31, 2009 (Xinhua/Reuters Photo)

A riot policeman stands in front of a giant mascot confiscated during a demonstration against the ongoing Davos World Economic Forum, in Geneva Jan. 31, 2009. (Xinhua/Reuters Photo)

GENEVA, Jan. 31 (Xinhua) -- Demonstrators against the Davos World Economic Forum clashed with Swiss police in Geneva Saturday.

Hundreds of protesters gathered in front of a post office in the center of Geneva and then marched to the train station before they were halted by riot police.

Protestors hurled bottles and fireworks at police, who used tear gas and water canons to disperse the demonstrators.

Around 60 protestors were arrested and some were released later, said local police.

No one was injured during the clash, local media said. Local television said the protestors had no permission to stage the rally.

In Davos, a group of some 100 protesters demonstrated against the forum and they threw shoes and snowballs at the convention center.