PALMDALE, Calif.—Sheriff’s detectives Jan. 17 are investigating the deaths of four men whose bodies were found at a house in Palmdale.

Paramedics from the Los Angeles County Fire Department arrived at the 37500 block of 17th Street East at around 4:30 p.m. Tuesday regarding a report about men with medical complications, according to a department spokesman.

The medical distress the men were experiencing remains unclear.

According to the Los Angeles County Department of Medical Examiner, one man was in his 60s, and the other three were in their 30s. Their names were withheld, pending notification of their next of kin.

“There were obvious signs they had been deceased for a while,” Chris Reynoso, a spokesman for the fire department, told the Los Angeles Times.

NBC4 reported that a neighbor told the station on Tuesday that three of the four men were related.

The Los Angeles Times reported two of the victims were found in the home’s backyard and two were inside the house.