On May 14, 2007 workers from the governmental Forest and Nature Agency with help from the police, entered Christiania to destroy the abandoned building of "Cigarkassen" ('the cigar box'). They were met by angry and scared Christianites who feared that the police were going to demolish other houses too. Road blocks were built and the trucks were sabotaged so that they could not move. After the police then entered the Freetown and Christianites attacked the policemen with fireworks and stones, and built barricades in the street outside Christiania gate. The police used tear gas on the people. The police later had to retreat from Christiania. The riot continued over night. At the entrances the Christianites bombarded the police with stones and Molotov cocktails forcing them to retreat. More than 50 Christiania activists and rioters from outside were arrested.