Jakarta, Indonesia (CNN)Mount Semeru, a volcano on Indonesia's East Java Province, erupted on Saturday, spewing a column of smoke and ash while displacing thousands from the area, authorities said. The eruption has killed at least one person and wounded 41 others, Indah Masdar, deputy head of Lumajang District, said in a press conference held in Jakarta. Budi Santosa, Head of Disaster Management of East Java Province, said earlier on Saturday that two sub districts had been "badly affected" by the volcano's eruption.