WATERTOWN, Minn. - Christian Phillip Oberender, 32, is in jail in Carver County accused of possessing 13 firearms and ammunition as a convicted felon.

Oberender was convicted of murdering his mother, Mary Oberender, in 1995. He was 14-years-old when he shot her several times with a shotgun.

Now, 18 years later, he faces felony charges for possessing those 13 guns illegally, but it's what he didn't do that has his community on edge.

"I need to know about these things. I am going to keep a very visual look at what is happening in this case and follow it and figure it out. Whatever happens I'm going to want to know," Watertown-Mayer Superintendent of schools David Marlette said Tuesday night.

David Marlette says he just learned about Oberender's release from civil commitment and his arsenal on Monday.

And while Oberender never threatened to shoot anyone at any school, it is still something, in this day and age Marlette says he needs to know about.

Marlette said he learned Monday from Oberender's neighbors that he allegedly passes his days shooting his guns outside of the rural home where his mother was shot.

"The neighbors said they made numerous calls to the sheriff's department that they young man is out shooting a gun in the back yard and reported it and I just think it took too long for someone to come and take his guns away," Marlette said.

Beyond the target practice, perhaps most alarming are what investigators say they found in Oberender's bedroom.

A note titled "Dear Mom" written recently that read,"I feel the good part of me fade away. I don't know how long I can hold it in for. I think about killing all the time ... The monster want out. I know what happens when he comes out. He only been out one time and someone die ... The monster want to hurt people. There is so much pain in my heart and soul. Me want others to feel it."