James Crumbley kept guns in safe locked with code '000' as manslaughter jury is shown photos of it lying empty after his son Ethan's school rampage

James Crumbley kept several guns in a safe locked with a '000' code and failed to ever secure his school shooter son's firearm with a cable lock, his jury has heard.

The Michigan father, 47, is facing involuntary manslaughter charges over his son Ethan's November 2021 mass shooting, where he killed four classmates and injured seven others. 

Prosecutors have argued James was a reckless gun owner who ignored his son's pleas for mental health support, before buying him a Sig-Sauer 9mm handgun four days before the massacre. 

On the fourth day of his trial on Tuesday, allegations that James failed to secure the gun saw prosecutors show an empty gun case and ammunition on his bed following the Oxford High School mass shooting. 

On Tuesday, prosecutors showed an empty gun case and ammunition that James Crumbley stored two guns inside, with a code of just '000' keeping it locked

James Crumbley (seen in court Tuesday) is alleged by prosecutors to have been a reckless gun owner who negligently ignored his school shooter son's pleas for mental health help, before he bought Ethan a firearm four days before he opened fire on classmates 

Ethan Crumbley is now serving life in prison without the possibility of parole for the 2021 Oxford High School mass shooting, where he killed four classmates and injured seven others

On the day of the tragedy, James had raced home from work as soon as he heard there was a shooting at his son's school, where he found the gun he had gifted to Ethan was gone alongside a slew of bullets. 

In their attempts to paint him as a careless gun owner, prosecutors on Tuesday showed James' gun box used to store two other guns owned by the father.

He had kept the guns in a drawer under the island of his kitchen, keeping both a Derringer and a KelTech in the box secured with just a '000' code. 

The day prior, ATF Special Agent Brett Brandon testified that when he inspected Ethan's 9mm, he 'found no evidence that a cable lock was ever installed on that firearm.'

Conversely, the cable lock was found in the gun box still in its original packaging, despite Brandon noting it would have taken around 10 seconds to secure. 

Ethan, now 17, previously said at his trial that his 9mm handgun was 'not locked' when he took it to school on the day of the shooting. He is currently serving life in prison without the possibility of parole.  

On Tuesday, the jury heard from Oakland County Sheriff's deputy Adam Stoyek, who was tasked with securing the Crumbley home after the shooting. 

Stoyek testified that James was cooperative as officers searched his home, and informed them of his other firearms located around the property. 

In video played to the court, he also warned them of a BB gun, saying: 'It's unloaded but it looks like a freakin' assault rifle. Don't freak out when you see that.' 

 Detective Adam Stoyek looks over photographs during testimony during the trial on Tuesday 

ATF Special Agent Brett Brandon (right) testified Monday that Ethan Crumbley's 'shooter stance' and 'tactical reloading' during the school shooting 'stood out' to him, and resembled techniques commonly taught to law enforcement 

Photos of Ethan's squalid bedroom were shown to the jury, showing he had an array of targets from the shooting range - alongside a mess of filth that filled the room. 

The court previously heard how Ethan's parents took him to a shooting range numerous times before the tragedy, where he was taught the appropriate shooting stance and how to reload as quickly as possible. 

In Brandon's testimony, the gun expert said Monday that when he reviewed footage of the shooting, he was struck by the way that Ethan appeared trained with firearms.

Specifically, he said Ethan's 'shooter stance' was noticeable - which eerily matched footage of Ethan shooting a gun at a gun range during one of the trips with his parents. 

Brandon added that Ethan's efficiency with the weapon 'stood out' to him, as he appeared adept at 'tactical reloading.'

The technique is often taught to law enforcement, here you keep extra ammunition in spent clips in your pocket, to ensure the handgun is maximally loaded for short bursts of shooting.

If not entirely emptied, keeping the ammunition clip in his pocket would have allowed Ethan to partially reload his gun later if needed. 

One of the teen killer's trips to the shooting range with his father was shown to the court Monday, eerily matching the stance he took when he shot and killed classmates 

Ethan's mother Jennifer Crumbley (pictured testifying in her own trial on February 1) was convicted last month on the same charges her estranged husband is now facing 

On the morning of the school shooting, teachers became concerned after finding alarming drawings and writings on his homework, including drawings of shooting victims around 'the thoughts won't stop... Help me' 

Allegations that James negligently ignored his son's disturbing behavior have centered largely on the day of the shooting.

That morning, Ethan had secretly stowed his Sig-Sauer 9mm in his school backpack. 

He then concerned teachers after drawing pictures of school shootings on his math homework, surrounded by phrases including, 'the thoughts won't stop... help me.' 

Both James and his estranged wife Jennifer, who was convicted last month on the same charges he is now facing, declined to take Ethan home as they were 'busy' at work.

As Crumbley's trial began Thursday, it was revealed James had his communication privileges revoked after allegedly making threatening statements from jail, reports WJBK. 

The sheriff's office said that he is now limited to conversations with his lawyer, but did not elaborate on who received the alleged threatening statements or what the nature of them was.