According to this source the killer was his wife.

A woman killed her husband late on Saturday (16) during a forró party in a bar located in the east side of São Paulo. Genivaldo José da Silva, 39, died after being stabbed several times by his wife after an argument between the couple that angered his wife. The information is from Record TV.

The crime was allegedly motivated by his wife's jealousy, according to the victim's family members. She left the party and returned home, about 50 meters from the bar, to arm herself with a knife, with which she killed her husband. They had been married for eight years and had three children. The man was treated, but died in the hospital.

Security cameras showed the moment the woman rushed into the bar and struck her husband, who was celebrating his new job. On site recordings, the couple hug and talk shortly before the crime. On Friday (15), they also attended a barbecue together.

Genivaldo is struck multiple times in the middle of the local dance floor. Another fight was taking place at the same moment, which drew the attention of the bar visitors. The victim still manages to reach outside the establishment, but is attacked again by the woman, with new blows.

Unable to defend himself, the man falls to the ground, where he is stabbed more often.

The quarrels between the couple were constant, according to family and friends of the victim. Genivaldo even separated from his wife, afraid of the threats and violence he suffered, and moved to Pernambuco. They resumed the relationship in June this year.