An Indonesian volcano that has been rumbling for months unleashed a major eruption Saturday, killing 14 people just a day after authorities allowed thousands of villagers who had been evacuated to return to its slopes, saying that activity was decreasing, officials said. Among the dead on Mount Sinabung were a local television journalist and four high-school students and their teacher who were visiting the mountain to see the eruptions up close, AP quoted National Disaster Mitigation Agency spokesman Sutopo Purwo Nugroho as saying. At least three other people were injured, and authorities feared the death toll would rise. Sinabung in western Sumatra has been erupting for four months, sending lava and searing gas and rocks rolling down its southern slopes. Authorities had evacuated more than 30,000 people, housing them in cramped tents, schools and public buildings. Many have been desperate to return to check on homes and farms, presenting a dilemma for the government.