[5] 2007 Al Qaeda Plot in Copenhagen - Danish police officers and Security Intelligence Service agents arrested eight, six of which were released after questioning.
In 2014, he was sentenced again by the Fredriksberg court to four years in jail for publishing extremist islamist material thereby supporting al-Qaeda.
Two Somali brothers residing in Denmark were arrested in May 2012 on suspicion of preparing a terrorist attack and the elder was alleged to have undergone training by Al-Shabaab.
[9] 2015 Copenhagen shootings - shooting attacks in Copenhagen beginning in the afternoon of 14 February at a public event called "Art, Blasphemy and Freedom of Expression" at Krudttønden cultural centre, followed by another at the Great Synagogue just after midnight (i.e., 15 February), and finally the killing of the perpetrator in the early morning by police.
[15] Ringsted terror plot - A Norwegian-Iranian was arrested and suspected of having planned Iranian intelligence operations in Denmark.
Both Norwegian PST and Danish PET also suspected the man to take part in the planning of an assassination against the leader of the Iranian group Arab Struggle Movement for the Liberation of Ahvaz.
[16] Danish Security and Intelligence Service (PET) and police arrested around 20 people throughout Denmark 11 December 2019, 8 of which have been charged with attempted terrorism.
[17][18] Two Swedish teenagers were arrested by Danish Police in connection with a bomb blast near the Israeli Embassy in Copenhagen on October 2.