Dylan Rounds, a teen farmer from Idaho who set out on his own in Utah and was expecting his first harvest when he vanished last year, remains missing.
James Brenner, 59, shot a man
at a Maryland campground in the 1980s over a work dispute, court records show, and has been in custody since July after police found the felon unlawfully in possession of multiple firearms following the disappearance of Rounds, who was 19 when he was last seen and would be 20 today.
Box Elder County authorities announced the murder charge
last week after they said they had recovered Rounds' phone – and an incriminating video on it allegedly showing Brenner wearing bloody clothes and cleaning a gun.
Deputies found the clothes – and Rounds' DNA on them, according to authorities.
Brenner was squatting on land next to Rounds' property and where authorities found the missing man's boots and farm truck, according to court documents. They found blood
on one of the boots – as well as Brenner's DNA, according to the criminal complaint.
Brenner's past criminal history includes malicious wounding, malicious shooting and three prior convictions for being a felon in possession of a firearm, court records show.
"The defendant has no work history and is currently unemployed and has no verifiable residence," court documents state. "The defendant was trespassing and squatting on property."
As part of their search for Rounds
, investigators served several search warrants. Two of them led to federal cases against men who had interacted with Rounds before his disappearance – Brenner and Chase Venstra.
When police announced the murder charge against Brenner last week, they also ruled out the potential involvement of Venstra or any other suspects in Rounds' disappearance.