A CHAMPION bodybuilder was allegedly stabbed to death by his girlfriend during a brutal fight in their apartment.

Cops say Valter de Vargas Aita, 41, was knifed multiple times before collapsing dead in the stairwell of his building in Brazil .

The horrifying incident unfolded in Chapeco, a city in the west of the state of Santa Catarina, on the morning of Sunday, September 7.

Police revealed Valter had stab wounds to his abdomen, back, face and neck.

Gruesome images released by investigators show how he left blood marks in the corridors and stairwells as he tried desperately to escape.

The bodybuilder collapsed and died on the stairs of the building after the frenzied attack.

Neighbours reported hearing the sounds of a violent fight before officers arrived.

When cops entered the

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