Dutch arrest 3 men suspected of attack plan

AMSTERDAM (Reuters) - Dutch police arrested three men on Monday suspected of planning an imminent attack.

Prosecutors said in a statement police made the arrests in Rotterdam after the Dutch intelligence service said it was possible the suspects -- aged 31, 32 and 39 -- were about to carry out an unspecified act of violence.

Prosecutors were not immediately available to give more details.

Dutch news agency ANP cited a prosecution spokesperson as saying it was not clear whether the men were planning a terrorist attack. ANP said two of the men were Dutch-Moroccans and the third was from Sudan.

The Dutch government has classed the risk of a terrorist attack as "substantial", the second highest in a four-stage warning system, since the London bombings on July 7, 2005.

In 2004 the Netherlands was shaken by the murder of filmmaker and Islam critic Theo van Gogh by a Dutch-Moroccan. Several other Muslim militants have since been sentenced for planning attacks on politicians and government buildings.

(Reporting by Emma Thomasson, Editing by Janet Lawrence)