This is the shocking moment a jilted lover shoots his girlfriend and her mother in the street after a night out that ended in an argument, and the deaths of the two women.

The double murder took place outside the victims’ home in the neighbourhood of Nueva Esperanza in the municipality of San Antonio in the northern Argentine province of Misiones, bordering Brazil and Paraguay.

Graciela Aguero, 39, and her daughter Debora Elizalde, 24, were shot dead outside their home.

Rafael Elizalde, who was the son and brother of the dead women, managed to disarm the alleged killer who ran off when the weapon was thrown into nearby shrubbery.

The suspect has been named as Sergio Kozak, 33, who was Debora’s recent employer and boyfriend.

According to reports, the family members were with Kozak at an entertainment venue until the early hours of the morning. His relationship with Debora was described as turbulent and they had recently split, with the meeting that evening a failed attempt at reconciliation.

Halfway through, Debora and her boyfriend became embroiled in a row and the police were called. Kozak was ejected from the venue and allegedly went home to get a gun before returning to wait for the victims to leave.

The victims then left the venue in a hire car and Kozak reportedly followed them in his pickup truck.

According to Rafael, the suspect first tried to run over one of the women with his Fiat Toro truck outside their home before using a .32-calibre gun to shoot them both.

Mother and daughter died at the scene while Rafael struggled with the suspect, adding that he managed to grab the gun and throw it into some overgrowth.

After the shooting, the suspect drove to the area of Andresito where it is believed he fled across the border into Brazil.

His vehicle was found abandoned several miles from the murder scene, close to the border.

The police have carried out a wide-scale manhunt in the border region to locate the suspect.

The investigation is ongoing.