The parents of a Michigan school shooter who killed four students are due to be sentenced on Tuesday, marking the end of a landmark criminal case.

James and Jennifer Crumbley were both found guilty of manslaughter charges and each face up to 15 years in prison.

Jurors found that they ignored their son's mental health needs and bought him the gun he used in the 2021 attack.

The first parents of a mass shooter held criminally liable in the US were each convicted in separate trials.

The father of a Michigan school shooter was found guilty of involuntary manslaughter Thursday, a second conviction against the teen’s parents who were accused of failing to secure a gun at home and doing nothing to address acute signs of his mental turmoil.

The jury verdict means James Crumbley has joined Jennifer Crumbley as a cause of the killing of four students at Oxford High School in 2021, even without pulling the trigger.

The Uvalde police chief who was on vacation during the Robb Elementary School shooting submitted his resignation Tuesday, less than a week after a report ordered by the city defended the department’s response to the attack but outraged some family members of the 19 children and two teachers who were killed.

Jennifer Crumbley was found guilty of four counts of manslaughter Tuesday — the first parent in the US to be charged over a mass school shooting committed by their child.

Crumbley, a 45-year-old marketing director, was convicted over her role in the Nov. 30, 2021, mass shooting carried out by her son, Ethan Crumbley, at Oxford High School that left four students dead alongside six others and a teacher wounded.

The 12-person jury, made up of six men and six women, reached its decision in Oxford, Michigan, on Tuesday after 10 hours of weighing the case.

The father of one of the victims of the Oxford High School shooting says the conviction of the shooter’s mother makes him feel like his voice has been heard.

Jennifer Crumbley was found guilty on four counts of manslaughter Tuesday by a Michigan jury that concluded she failed to prevent her son’s actions.

Buck Myre’s son Tate was killed in the November 2021 shooting.

“Today, the people spoke,” Myre said Tuesday on “CUOMO.” “For me as a sportsman and a responsible gun owner — I love to target shoot — I feel like for once my voice is heard in this.”

Jury deliberations went on for 11 hours before Jennifer Crumbley, the mother of the Oxford High School shooter, was found guilty of four counts of involuntary manslaughter. 

Deliberations began Monday after a week-long trial, and the verdict was reached Tuesday afternoon.

Oakland County Judge Cheryl Matthews read instructions to the 17 jurors and then narrowed them down to 12, removing the alternates. The jury is currently made up of 10 women and seven men.   

A jury has found a Michigan mother guilty of involuntary manslaughter for failing to stop her son from carrying out a deadly school shooting.

Jennifer Crumbley, 45, is the first US parent convicted of manslaughter over a mass shooting carried out by their child.

Prosecutors accused her of being negligent in allowing her son to have a gun, and ignoring warnings signs.

Her husband, James, is facing a separate trial on the same charges.

He has pleaded not guilty.

A Justice Department investigation released on Thursday found that a near-total breakdown in policing protocols hindered the response to the 2022 school shooting in Uvalde, Texas, that left 21 people dead — but the gravest error was the reluctance of officials to confront the killer during the first few minutes of the attack.

Police failed in their response to the 2022 elementary school shooting in Uvalde, Texas that killed 19 children and two teachers, the U.S. Justice Department concluded on Thursday, saying that the victims "deserved better."

The report faulted law enforcement officers for waiting more than an hour to breach the classroom where the 18-year-old gunman was holed up with students and staff, leaving the children inside to make panicked 911 calls.