Forensics in Christmas cake poisoning case make bombshell discovery during tests on exhumed body of baker's husband – as cops continue to quiz daughter-in-law over 'triple murder'

Forensic tests on the body of a man exhumed after his daughter-in-law was arrested for a Christmas cake triple murder have confirmed he had traces of arsenic in his body.

Retired bus driver Paulo Luiz, 68, died last September after eating contaminated bananas and his wife Zeli Dos Anjos, 61, was also taken ill but survived.

Their daughter-in-law Deise Moura, 42, is currently in custody after police held her in connection with three murders and three attempted murders last month involving…