Liberian government shuts down major dissident radio station The Liberian authorities close down three radio stations accused of operating illegally. One of the stations is Roots FM, owned and operated by opposition politician and fierce government critic, Henry Costa. Riot police laid siege to the station in the morning, blocking the street and using tear gas to disperse people protesting against the move. IMAGES of the radio station building after the closure AND SOUNDBITES of the Liberian minister for Information and eyewitnesses