Five men were arrested in December 2010 in the direct process of carrying out the attack. The arrest was due to the men being under tight surveillance, and covert investigation from the Swedish and Danish intelligence services in a successful cooperation. The arrested men including a 37-year-old Swedish citizen of Tunisian origin living in Stockholm, a 44-year-old Tunisian, a 29-year-old Lebanese-born man, and a 26-year-old Iraqi asylum-seeker living in Copenhagen—for allegedly planning "to kill as many of the people present as possible" in the "Jyllands-Posten" Copenhagen newsdesk.