That's a refreshing twist instead of the usual "He's a good boy, gettin' his life together, gon be a big rap star, gettin his GED, Din do nuffin." Of course, that could be next when his alibi of being at Mom's house crumbles.
But, innocent until proven guilty. Maybe he is innocent and Mom's telling the truth.
In this case, the mom called police and turned the son in.