A Missouri man has been accused of shooting his girlfriend to death during an argument at their mobile home in Laclede County.

The Laclede County Sheriff’s Office said 22-year-old Dillion Bacon was arrested on Saturday and charged with first-degree murder and armed criminal action. He’s being held without bond.

The sheriff’s office said it responded to a 911 call at about 2:30 Saturday afternoon and found Megan Glasser, 21, dead.

A probable cause statement for Bacon’s arrest says that the suspect told officers he and Glasser and been arguing and that he took a gun out of his pocket and began waving it around, according to KY3. Glasser reportedly yelled at him to put it away, then reached for the gun. Bacon said it went off, but he denied shooting Glasser on purpose.

Bacon also reportedly told officers that he and Glasser had argued in the past and that Glasser had been injured when the arguments turned physical, but he also denied that those injuries were intentional.

Bacon’s grandparents were at the home at the time of the shooting, telling police they had witnessed their grandson assault Glasser in the past and that they had told her to end the relationship, the probable cause statement said.

An autopsy will be conducted on Monday, police said.

Court records show that Bacon has a warrant for his arrest on domestic assault charges in Joplin.

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[Featured image: Dillion Bacon/Laclede County Sheriff’s Office]