Ellen Priscila Ferreira da Silva was burned alive October 17 in São Paulo, Brazil, by a 19-year-old married man with whom she was expecting child

The suspect police said, committed the fatal arson with the help of his wife and two male accomplices

The charred remains of Ferreira da Silva, 24, and Ely Carlos Dos Santos, 36, in a car in a cane field in the rural ​​Coroados, São Paulo, Brazil on Oct. 17

They had been tied up and burned alive with an accelerant while in the vehicle

Ferreira was four months pregnant with the 19-year-old man’s baby and refused to have an abortion

Police in São Paulo, Brazil, arrested the 19-year-old man and his 36-year-old wife last Thursday for the gruesome murder of Ellen Priscila Ferreira

The couple allegedly, have admitted to the gruesome crime

Police also arrested two other men, aged 35 and 38, both of whom denied their involvement in the crime

The four suspects have been charged with triple homicide in the deaths of dos Santos, Ferreira da Silva and her unborn child

A 19-year-old married man forced his pregnant mistress into a car before burning her alive, with the help of his wife, who is also pregnant, after she refused to have an abortion
Police in São Paulo, Brazil said the perpetrators of the deadly arson tied up the pregnant victim and a male friend inside a car before setting the vehicle ablaze.
The victims were alive when the car was torched by the suspect and his wife with the help of two other people.  
Ellen Priscila Ferreira, 24, was just four months pregnant and expecting the baby of one of the suspects when she and her friend Ely Carlos dos Santos, 39, were killed in the town of Coroados. The remains of the pair were found charred in a car in a cane field in the rural area of ​​Coroados on October 17.
According to Brazilian news outlet G1, the 19-year-old suspect and his pregnant 36-year-old wife confessed to the Civil Police following their arrest last Thursday. 
The couple said they had orchestrated the gruesome crime after Ferreira refused to have an abortion. 

Paulo de Tarso, who is leading the investigation, said he had never been assigned to a crime of that magnitude in his 30 years on the police force. 
‘Ellen was pregnant with the man who killed her. He is married, but had a relationship with Ellen,’ de Tarso said. ‘The suspect’s wife was also pregnant. They both wanted Ellen to take the child away, but she did not accept it.’ 
According to de Tarso, the suspects poured gasoline over the victims before setting them on fire.
The charred remains of the victims were identified by genetic DNA markers from their families.

Authorities also apprehended two other men, aged 35 and 38, along with the couple.
The four suspects were arrested on Thursday morning in Coroados. However, both male accomplices have denied their involvement in the crime. 
All four suspects will be held in custody for 30 days during the initial investigation.
‘To date, we are not sure how the victims were approached. We know what happened after they were tied to the car,’ de Tarso said. 
‘We are trying to prove that the man and the woman, who are married, got together with the other two suspects to commit the crime.’
Hoje Mais reported that the 38-year-old suspect attempted to distance himself from the crime by presenting himself before authorities on October 21 to file a police report in which he claimed he was attacked by three men while he was smoking crack in Parque das Nações. 
The man told the police that the attackers unlaced his sneakers and used to laces to tie up his hands and feet. However, the assailants failed to set him on fire because he pretended he was unconscious.

According to de Tarso, police are working on three plausible motives behind the killings.
Authorities say that it is likely because that pregnant Ferreira da Silva was killed because she was a witness in a case of attempted murder by the suspect and reported him. In addition, she had an alleged drug debt. 
Her friend dos Santos also owed money to a drug dealer, according to the police: “We work with three lines of investigation. Drug debts, passionate crime and the fact that Ellen reported another crime that the man committed, ” de Tarso said.