Police say one person is dead and three police officers are injured after a shooting at a Copenhagen cafe where a meeting about freedom of speech was being held, NBC News reported. The event was organized by Lars Vilks, a Swedish artist who has faced numerous threats for caricaturing the Prophet Muhammad in 2007. The lone suspect fled after gunfire erupted around 4 p.m. local time (10 a.m. ET) at Krudttoenden cafe in the Osterbro district, police said in a statement. The TV2 channel said there were some 30 bullet holes in the window of the cafe and at least two people were taken away on stretchers. Police told NBC News that one person was killed but it was unclear whether the victim, described as a civilian, died at the scene. Danish Prime Minister Helle Thorning-Schmidt put the entire nation on high alert and condemned the violence as a "terrorist attack." Meanwhile, Vilks told The Associated Press by phone that he believes he was the intended target of the attack, asking, "what other motive could there be?"