Dutch Police Arrest 12 in Suspected Terror Plot Somali men were raided in port city of Rotterdam By Newser Editors and Wire Services Posted Dec 25, 2010 3:59 PM CST 1 comment Comments File photo. (Shutterstock) (Newser) – Dutch police have arrested 12 Somali men in the key port city of Rotterdam on suspicion of preparing a terrorist attack. The men, aged 19 to 48, were detained yesterday on a tip from the intelligence services that they were planning an attack shortly in the Netherlands. There was no immediate information on the alleged target, but Rotterdam is Europe's biggest port and a hub of maritime commerce, with huge oil and gas storage facilities and dozens of massive docks.. Dutch police searched a phone shop, four houses, and two motel rooms in the Rotterdam area. No weapons or explosives were found. Six of the suspects lived in Rotterdam, five had no permanent residence and one came from Denmark, they said. European officials stepped up security around the holidays this year after a Nigerian man in 2009 left Amsterdam airport on Christmas Day and allegedly tried to blow up a plane over Detroit with explosives taped to his underwear.