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Bodybuilder, 38, ‘murdered wife with help from his mum using rat poison after she discovered he was having an affair’

Published on May 08, 2025 at 12:18 PM

A BODYBUILDER allegedly murdered his wife with the help of his mum after she discovered he was having a secret love affair.

Luiz Garnica, 38, and his mum, Elizabete Arrabaça, were arrested on suspicion of poisoning Larissa Rodrigues in Ribeirao Preto,Brazil on Tuesday.

Couple taking a selfie at a restaurant.
Larissa Rodrigues (left) was allegedly killed by her husband Luiz Garnica (right)
Couple kissing with their dog and a birthday cake.
Rodrigues died shortly after discovering that her husband was cheating on her
Selfie of Larissa Talle Leoncio Rodrigues.
Rodrigues is thought to have been poisoned with chumbinho – commonly used as a rat poison
Photo of Luiz Antonio Garnica and Elizabete Arrabaça.
Luiz Garnica pictured with his mum Elizabete Arrabaça

Rodrigues had just learned of her husband’s affair when she died on March 22, according to the investigation.

She made the bombshell discovery after finding sex toys in her husband-of-18-years’ car, according to a statement provided by her cousin to the police.

The 37-year-old Pilates instructor was reportedly planning to her husband after uncovering his dark secret.

But she died before she had the chance, after allegedly being slipped poison by her mother-in-law at the couple’s apartment.

Brazilian cops arrested Garnica and his mum after a toxicology test showed up with traces of chumbinho.

Chumbinho is a deadly pesticide which has been illegally commercialised as a household rat poison in .

On the day of Rodrigues’ death, Garnica claimed that he arrived home and called out to his wife who did not respond, according to the .

He said that after searching for her in several rooms, he finally found her on the bathroom floor unconscious.

The bodybuilder and orthopaedic surgeon claimed he picked her up off the floor and carried her to the bed to carry out urgent emergency procedures.

When these proved unsuccessful, he called the emergency services.

Medics confirmed Rodrigues’ death at the scene and the case was immediately registered as a suspicious death.

Head of the Detective Fernando Bravo said: “His [Garnica’s] involvement was quite evident to us by the way he found Larissa, she was already in rigor mortis.

“And he tried to clean the apartment as if he was trying to destroy the evidence for the technical expertise.”;

Garnica’s lawyer has stated that Garnica is innocent.

Garnica’s mum was reportedly the last person to see Rodrigues alive the day before she died.

The police claim Arrabaça called a friend to ask about the alleged poison before her shocking death, according to Globo.

A representative from the investigation said: “She even called a friend who is a farmer to find out if she had this substance on her farm.

“When her friend said no, she asked for a recommendation of where to buy it, but none were provided or recommended.”;

They added: “We managed to find a witness who reported that the mother-in-law was looking for lead to buy, approximately 15 days before the death, so this gave us certainty that she, together with her son, killed Larissa.”;

Arrabaça has denied all wrongdoing.

Garnica is believed to have gone on a cinema date with his lover hours before helping to end his wife’s life.

Police chief Fernando Bravo revealed that they had recieved a photo of Garnica with his mistress in a “public place,”; from an source.

The photo led to Garnica admitting that he had been cheating on his wife and had spent the night with his unnamed lover on the night his wife is thought to have died.

A couple kissing overlooking a lake.
Garnica is thought to have been having an affair for 18 months
Professor Larissa Rodrigues on a beach.
Rodrigues uncovered the affair after finding sex toys in his car
A man holding his wife in a wedding dress.
The couple had been married for 18 years

It is believed that Garnica’s love affair had been going on for around 18 months.

Garnica posted a gushing tribute to his late wife on social media, writing: “I love you, wherever you are.

“Know that you have made me the dearest, happiest and most loved man in the world and I want to always be your best friend, boyfriend, husband, companion, the love of your whole life, just as you are of mine.”;

This comes aftera string of horror poisoning cases across over the past few months.

A woman accused of killing three relatives with an was found dead in her jail cell in February.

Deise Moura dos Anjos, 42, was found lifeless in her cell at a women’s in Guaiba on the outskirts of the southern city of Porto Alegre.

The alleged cake killer was remanded in prison on January 6 on suspicion of three murders and three attempted murders.

She always maintained her innocence, despite police branding her a “serial killer”; after her arrest.

Local cops had said that the evidence they had that she poisoned the deadly was “robust.”;

Her mother-in-law, Zeli, baked the cake eaten by the relatives who fell ill – and it’s thought Deise contaminated it with arsenic-laced flour.

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.

Couple and dog outdoors.
Garnica has now admitted to cheating on his late wife
Professor Larissa Rodrigues in a restaurant.
Rodrigues worked as a Pilates instructor
Luiz Antonio Garnica, a doctor accused of murdering his wife.
Garnica is a bodybuilder and orthopaedic surgeon

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