Zeli's sister Maida Bernice Flores da Silva, 58, another sibling called Neuza Denize Silva Dos Anjos, 65 and Neuza’s daughter Tatiana Silvia Dos Santos, 43, all died within hours of eating the cake.
Police said in a statement this morning: “‘We can confirm that during the morning roll call at the Guaíba State Women's Penitentiary, inmate Deise Moura dos Anjos was found without vital signs.
After Deise’s arrest, suspicion began to mount about the death of her father in law, Paulo Luiz Dos Anjos, Zeli’s husband, who died in September of assumed food poisoning.
Margaret Mittman, a forensic investigations director from Torres, said: “The source of that arsenic poisoning was the cake eaten by the victims and the source of the contamination of the cake was the flour found in Zeli’s house in Arroio do Sol.”.
Deise was locked up last month on suspicion of three murders and three attempted murders via a poisoned Christmas cake.
