Officers performed a welfare check on Crimo III in April 2019, after he “attempted to commit suicide by machete,” a police report states. An attorney for his parents previously disputed details of the incidents described in police reports.

Police returned to the home in September 2019, after a family member reported Crimo III said he was going to kill everyone, directing the threat at those in his home, according to a police report. Officers confiscated several knives from Crimo III’s closet. His father retrieved them from the police station later that day, per the report.

Crimo III bought five guns, including two rifles, after the September visit from police, Chris Covelli, a spokesperson for the Lake County Major Crimes Task Force, previously said. The high-powered rifle Crimo III is accused of using to fire on the parade crowd from a rooftop across the street was purchased legally, police said.

Prosecuting the parents of suspects

Crimo Jr. isn’t the first parent of a mass shooting suspect to face charges in connection with their children’s alleged actions.

The parents of Oxford High School shooting suspect Ethan Crumbley are facing four counts of involuntary manslaughter for buying their son the gun prosecutors say he used to kill four of his classmates in the mass shooting. Ethan Crumbley has pleaded guilty to murder and terrorism charges in connection with the shooting.

His parents, James and Jennifer Crumbley, have argued they should not be held responsible for their son’s actions. In a written opinion filed in March, a panel of judges for Michigan’s appellate court said the Crumbleys were a unique case.

“We share defendants’ concern about the potential for this decision to be applied in the future to parents whose situation viz-a-viz their child’s intentional conduct is not as closely tied together, and/or the warning signs and evidence were not as substantial as they are here,” wrote the panel.

Attorneys representing survivors and a family member of one of the victims who died in the racist mass shooting in a Buffalo, New York, grocery store last year are suing the shooter’s parents. They argue the parents of then-18-year-old Payton S. Gendron failed to intervene or limit their son’s access to firearms despite knowing about his mental health problems.

Gendron was sentenced to life in prison in February for killing 10 people in the supermarket.

Lauren del Valle, Zoe Sottile and Aya Elamroussi contributed to this report.