A married man ties up a pregnant girlfriend in the car and sets her ablaze after she refused to have an abortion.

Police have arrested a man after he tied up his pregnant mistress and her friend before burning them alive in a car while four other people helped him—including his wife.

Ellen Priscila Ferreira, 24, was just four months pregnant when the suspect, her unborn baby's father, tied her in the car.

The suspect also tied her friend, Ely Carlos dos Santos, 39, alongside her and proceeded to burn them alive.

After the incident, police found charred remains of the two victims in the car. Police also believe they were alive when the suspects tied them up.

Afterward, they poured petrol on the car and set the car alight.

The victims' family confirmed the bodies after recognizing the car, which belonged to Ellen's mom.

According to reports, the 19-year-old suspect and his wife—who was also pregnant—confessed to the Civil Police following their arrest.

During police interrogation, the couple said they had hatched the gruesome crime after Ellen refused to have an abortion.

Paulo de Tarso, the lead investigator, said he had never dealt with such a crime during his 30 years in the police force.

He said:

Ellen was pregnant with the man who killed her. He is married but had a relationship with Ellen.

The suspect's wife was also pregnant. They both wanted Ellen to take the child away, but she did not accept it.

The officer added:

It was a deliberate and very cruel crime.

One of the suspects even personally comforted the victim's mother after investigators [confirmed their deaths.]

Police also detained two other male suspects.

However, they both denied their involvement in the heinous crime.

Police are investigating three possible motives: revenge, the crime of passion, and drug debt.

According to Paulo de Tarso:

Ellen and Ely Carlos may have been in debt to a drug dealer who [police] also arrested.

Ellen also refused to abort the child conceived in the extramarital relationship.

All four suspects are still in police custody until detectives complete an initial investigation.

Expressing how the crime perplexed him, de Tarso added:

To date, we are not sure how the [suspects approached the] victims. We only know what happened after they [tied them] to the car.

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.

One of the other two suspects attempted to distance himself from the crime by filing a police report.

He claimed that three men attacked him on the day of the crime while he was smoking crack. The suspect added that he pretended to have fainted so the attackers wouldn't burn him.

However, he later confessed to inventing the story and self-inflicting his wounds under the effect of drugs.