On 11 June 1849 the socialists and radical republicans made an attempt to seize power. Ledru-Rollin, from his headquarters in the Conservatory of Arts and Professions, declared that Louis Napoleon was no longer President and called for a general uprising. A few barricades appeared in the working-class neighborhoods of Paris. Louis Napoleon acted swiftly, and the uprising was short-lived. Paris was declared in a state of siege, the headquarters of the uprising was surrounded, and the leaders arrested. Ledru-Rollin fled to England, Raspail was arrested and sent to prison, the republican clubs were closed, and their newspapers closed down.