Ana Maria de Jesus, 52, and Larissa de Jesus Castilho, 21, died after she were rushed to the hospital after eating a slice of the cake sent over by her niece for her birthday

Autopsy showed the presence of pesticides in their bodies of the deceased mother and daughter who lived in the neighborhood of Ipiranga, in Sao Paulo, Brazil

After surveillance camera footage showed the cake was delivered by Leonardo who is married to Ana’s niece Patricia, police arrested Patricia and her husband

Examination of the suspects’ phones uncovered that their online search history included ‘Heart attack causes convulsions’ and ‘Intoxication from cleaning product’

It has been reported that Ana Maria regularly lent money to her niece and her husband – that debt could be linked to what subsequently happened

While the police homicide unit continue with the investigation, a judge has turned down police request to arrest and detain the suspects, for reasons yet to be made public

Ana Maria de Jesus, 52, a resident of in Ipiranga, Sao Paulo died in July. She was hospitalized after eating a slice of suspected poisoned birthday cake delivered on behalf of her niece who owed her money. The autopsy revealed the presence of pesticide

A mother and daughter have died in Brazil after eating a suspected poisoned birthday cake delivered by a relative who owed them money.  Detectives are investigating the pair’s death after they fell ill in Sao Paulo.
Ana Maria de Jesus, 52, and Larissa de Jesus Castilho, 21, were rushed to the hospital after eating a slice of the cake brought to them by the husband of Ana’s niece Patricia. Mother and daughter died in July and the autopsy revealed the presence of pesticides in their bodies.
Police are now demanding the arrest of a man named Leonardo, the husband of Ana’s niece, Patricia, who allegedly delivered the confectionery.
Police reportedly went through Patricia and Leonardo’s phones and discovered a series of online searches.
They allegedly included ‘heart attack causes convulsions’ and‘intoxication from cleaning product.’ 
A judge has refused the police request for his arrest for reasons yet to be made public, but the investigation is ongoing.
Cops investigating the new poisoning case have reportedly been told Ana Maria, who lived in the Sao Paulo neighborhood of Ipiranga, regularly lent money to her niece and her partner. It is believed that a debt could be linked to the incident.

Ana Maria’s daughter, Larissa de Jesus Castilho, [photo], 21, also died after eating the cake. Similar to her mother, the autopsy revealed the presence of pesticide

Leonardo was reportedly filmed arriving on his motorbike and dropping off a slice of cake for Ana, who had been ill, which she ate the same afternoon. 
She called her daughter shortly afterwards saying she felt ill and couldn’t stand up.
She was later rushed to Sao Paulo’s Heliopolis Hospital where she was put on a ventilator. 
Larissa and a 16-year-old cousin ate the cake after leaving Ana at the hospital and returning home.
Sao Paulo’s Secretariat of Public Security said a police homicide unit was probing the deaths.
The Secretariat said: ‘On October 8 search and seizure warrants were executed, resulting in the seizure of cell phones, which were sent for data extraction. The information obtained is still being analyzed by investigators.’
Police are thought to have begun the investigation after Ana Maria and her daughter died at the end of July. Larissa’s mum lost her fight for life in hospital, although the results of their probe so far have only just been made public. 
Initial results leaked to Brazilian press, along with the tests showing the pesticides, pointed to the incriminating searches on the couple’s phones.
Leonardo explained that he was simply helping a friend, and Patricia, whose Google searches from her phone also included one with the words ‘FBI persuasion manual’, reportedly told cops she doesn’t remember making them.