Twelve members of the same family were found dead in the northern Argentine province of Jujuy showing signs of asphyxiation from inhaling carbon monoxide, authorities said Friday.

The victims, four of them children, were found in a house in the small town of Caspala by a neighbor who notified the police.

Judicial sources cited by the official news agency Telam said investigations are underway to determine whether the deaths were caused by the malfunction of a generator in a small house without adequate ventilation.

The prosecutor in charge of the case, Jose Alfredo Blanco, ordered that a judicial commission, whose members must include forensic experts, determine the causes of death. EFE