Openbaar Ministerie•EPA Detectives found a Kalashnikov AK-47 rifle

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The suspect was detained with a Kalashnikov rifle, two full rounds of ammunition and a black and white flag of the notorious terror group. Reports said the 30-year-old was arrested on Wednesday in the city of Rotterdam but police have only now released details. Dutch prosecutors said in a statement this afternoon that he was suspected of planning a terror attack without giving details of the intended target.

Police also found four boxes of highly explosive illegal fireworks during a search of his house. Detectives searched the individual's apartment after receiving a tip-off from intelligence agency AIVD and retrieved mobile phones and 1,600 euros. He is being held for questioning for another two weeks.

ANL This AK-47 was confiscated from the man's flat

NC The loaded weapon police found with the suspect

Right-wing anti-Islam politician Geert Wilders, who was convicted today for insulting Moroccans and inciting discrimination against them, tweeted details of the arrest soon after it was announced. He appeared to pin blame on the rise of extremists on the incumbent Dutch prime minister, Mark Rutte, writing: “Netherlands thanks to Rutte.” The Netherlands' terrorism threat level has been at one below the highest level since March 2013, meaning that officials believe there is a realistic chance of an attack. Intelligence officials have repeatedly warned of the threat posed by Dutch citizens who have returned from fighting alongside ISIS in Iraq and Syria.

Europe prepares for terror attacks Thu, August 4, 2016 European Police are staging numerous training exercises to be best prepared for future terrorist attacks. Play slideshow AFP/Getty Images 1 of 48 Armed counter terrorism officers take part in an exercise on the River Thames

Rotterdam: "In zijn woning had hij een kalasjnikov met twee volle magazijnen en een schilderij met een IS-vlag."



Nederland dankzij Rutte. https://t.co/OwCPL2hHBz — Geert Wilders (@geertwilderspvv) December 9, 2016