The Brazilian government has begun a disarmament campaign officials hope will take more than 1 million guns off the streets by the end of the year.

Justice Minister Jose Eduardo Cardozo launched the campaign Friday just one month after a lone gunman shot and killed 12 children in a Rio de Janeiro school before taking his own life.

In similar campaigns held in 2003 and 2009, 1.1 million firearms were turned in. Cardozo says he hopes more guns will be turned in this year.

The Justice Ministry says on its website that gun owners can turn in their guns and ammunition with no questions asked and will receive the equivalent of up to $190. The weapons will be immediately disabled with a hammer and later melted down at a steel mill.