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Teachers and some students have returned to a Brazilian school less than a week after two armed men raided it, killing seven people.

Staff members gathered on Monday to decide when classes should resume, while students were invited to pick up any belongings left behind while running for their lives.

A multitude of flowers and messages lay on the ground outside the entrance gate in homage to victims and survivors.

Ten people died as a result of Wednesday's shooting, including the two killers and the owner of a nearby used-car dealership.

The tragedy has revived a debate around loosening gun laws in the country, a key campaign promise of far-right President Jair Bolsonaro.

Brazil is the world leader in annual homicides.