A man has been arrested on suspicion of preparing an Isis-inspired terror attack in the Netherlands after police found a loaded Kalashnikov and explosives alongside the group’s flag.

The Dutch Public Prosecution Service (Openbaar Ministerie) said the 30-year-old suspect was taken into custody on Wednesday.

Searches of his home in Rotterdam uncovered an AK-47 with two loaded magazines, four boxes of “highly explosive” illegal fireworks, mobile phones and €1,600 (£1,300) in cash alongside a painting of the Isis flag.

The suspect, who has not been identified, will remain in custody for at least two weeks as investigations continue.

His arrest came a day after Belgian police detained a suspected cell of Isis supporters who were recruiting foreign fighters for the so-called Islamic State.

The Belgian federal public prosecutor’s office said a court extended the detention of three suspects on Friday on charges of recruiting people to travel to Syria and financially supporting Isis.

Numerous terror plots have been uncovered in Europe since the group declared its “caliphate” in 2014 and Europol has warned further attacks remain likely across the continent.

Terrorism in 2016: Terror attacks in Europe claimed by Isis Show all 9 1 /9 Terrorism in 2016: Terror attacks in Europe claimed by Isis Terrorism in 2016: Terror attacks in Europe claimed by Isis Policemen outside Rouen's cathedral during the funeral of Jacques Hamel, the priest who was killed in a church in Saint-Etienne-du-Rouvray in Normandy on 26 July during a hostage-taking claimed by Islamic State group Joel Saget/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis Two jihadists, both 19, slit Hamel's throat while he was celebrating mass in an attack that shocked France as well as the Catholic Church Joel Saget/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis Muslims place flowers and hold a minute of silence in front of the church if Saint-Etienne-du-Rouvray, western France, where French priest Jacques Hamel was killed on 26 July Charly Triballeau/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis Two people hold each other by the new makeshift memorial in Nice, in tribute to the victims of the deadly Bastille Day attack at the Promenade des Anglais Valery Hache/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis The Islamic State group claimed responsibility for the truck attack that killed 84 people in Nice on France's national holiday. Mohamed Lahouaiej-Bouhlel, 31, smashed a 19-tonne truck into a packed crowd of people in the Riviera city celebrating Bastille Day Valery Hache/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis Police work at a site where a Syrian migrant set off an explosive device in Ansbach, southern Germany, on 25 July, killing himself and wounding a dozen others Daniel Roland/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis A Syrian migrant set off an explosion at a bar in southern Germany that killed himself and wounded a dozen others in the third attack to hit Bavaria in a week. The 27-year-old, who had spent a stint in a psychiatric facility, had intended to target a music festival in the city of Ansbach but was turned away because he did not have a ticket Friebe/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis Police officers walk along train tracks in Wuerzburg southern Germany on 19 July, a day after a man attacked train passengers with an axe. German authorities said they had found a hand-painted IS flag among the belongings of the man, an asylum seeker from Afghanistan, who seriously injured four members of a family of tourists from Hong Kong in his rampage Daniel Roland/AFP/Getty Images Terrorism in 2016: Terror attacks in Europe claimed by Isis German police killed a teenage assailant after he attacked passengers on a train in Wuerzburg, southerg Germany with an axe and a knife on 18 July, seriously wounding three people Karl-Josef Hildenbrand/AFP/Getty Images

The Paris and Brussels attacks were carried out by militants deployed by commanders from their strongholds in Syria, while other atrocities like the Nice massacre and German train attack were carried out by extremists apparently inspired by the group’s propaganda.

No attacks have so far been launched in the Netherlands but the country is among Isis’ targets as a member of the US-led international coalition bombing its militants in Syria and Iraq.

The Dutch government extended air strikes by four F-16 fighter jets from Iraq into Syria in January and they have taken part in operations helping push fighters out of key strongholds including Fallujah and Manbij.

More than 260 extremists have travelled from the Netherlands to join Isis in Syria or Iraq since 2012, according to a report released by its National Coordinator for Terrorism and Security.