At least ten buried bodies of seven women and three children were discovered on the property of a former police officer in El Salvador.
Hugo Osorio Chavez Osorio, 51, is being investigated on suspicion of sexual crimes and 13 murders, the country’s attorney general’s office said.
He was originally arrested last Saturday for the murder of a woman and her adult daughter, to which he supposedly confessed.
That arrest came after neighbours in the western city of Chalchuapa called the police and reported hearing a woman crying for help.
Officers found the bodies of a 57-year-old woman and her 26-year-old daughter in the house in a pool of blood.
The investigation led to excavations in various places on the property.
Some of the people appeared to have been killed about two years ago, the attorney general’s office told the media.
Seven other possible graves on the property are still being investigated. At least 25 people are considered missing in the area.
Chavez Osorio had been fired from his job as a police officer in 2005 for sexually aggressive behaviour and spent five years in prison, investigators said.