The Dutch public prosecutor says 12 Somalis have been detained in the port city of Rotterdam on suspicion of terrorist-related activities, as AP reported. The men were seized Friday on a tip from the intelligence services that they were planning a terrorist attack shortly in the Netherlands. There was no immediate information on the intended target. Police searched a call center, four houses and two motel rooms in the Rotterdam area, prosecutors said in a statement Saturday. No weapons or explosives were found. The prosecutors said the suspects are aged 19 to 48. Six live in Rotterdam, five have no permanent residence and one man comes from Denmark.