LONE TREE, Colo -
The Douglas County Coroner's Office has officially ruled the deaths of Jennifer Laber, 38, and her sons Adam and Ethan, a murder/suicide.
A coroner's report said that all three died of gunshot wounds, and that Jennifer Laber's gunshot wound was self-inflicted.
The boys, ages 3 and 5, each died from a single gunshot wound to the neck.
KDVR-TV reports that an autopsy revealed Laber drugged her sons before killing them. According to their autopsy reports, both boys had Oxycodone, Oxymorphone and Diphenhydramine in their systems.
The boys' father, Ryan Laber, had previously said that his wife suffered from depression. He attempted to address the question of why his wife killed her sons in a Facebook post on Thursday, writing in part "Going to heaven was just a next step to her. So as an act to insure she could provide the best motherhood to her boys, she took them with, painlessly, while they were under a deep sleep."
A missing Highlands Ranch mother and her two children were found dead Wednesday morning.
Authorities say a passerby spotted Jennifer Laber's van in a parking lot in Lone Tree. Three bodies were found inside.
Laber and her sons, Adam and Ethan, were reported missing at 8 p.m. Tuesday. They had last been seen in the area of North Hampton Court and Hibiscus Drive in Highlands Ranch.
The Lone Tree Police Department confirms the bodies that were found in the van are Laber and her sons.
The Douglas County Sheriff's Office says Laber took her sons out of school early Tuesday. It says there were no red flags to suggest the three were in danger or that an Amber Alert was needed.
The Douglas County Sheriff's Office says there is no threat to the community.
The children's father reported his wife and kids missing. The sheriff's office says he is cooperating with the investigation and is not considered a suspect.
Highlands Ranch and Lone Tree are suburbs of Denver and are located off of I-25, about an hour north of Colorado Springs.