Law enforcement officials found four current and former Los Angeles County Sheriff’s Department employees dead on Monday and Tuesday, in what officials described as unrelated suicides.

The deaths include one retired LASD member and three current members over a 24-hour period, according to KTLA. The first three victims were discovered on Monday, with the first victim being found dead at around 10:30 a.m. in Valencia; a second death was discovered at 12:53 p.m. in Lancaster; and a third death was reported at 5:40 p.m. in Stevenson Ranch. Detectives responded to the fourth victim Tuesday at around 7:30 a.m. in the city of Pomona, Fox News reports.

L.A. County Sheriff Robert Luna said, "We are stunned to learn of these deaths, and it has sent shockwaves of emotions throughout the department as we try and cope with the loss of not just one, but four beloved active and retired members of our department family."

Two of the victims from Monday were identified by the Los Angeles Times as 25-year career veteran Cmdr. Darren Harris, and retired Sgt. Greg Hovland.

The Los Angeles Sheriff’s Department has not officially disclosed the identity of the officers.