About 11:20 a.m., police received a call about a disturbance in the apartment, and shortly after they arrived, Sommer confronted officers at the door, slammed it shut and threatened to kill them if they tried to enter, the release said.
Sommer’s wife and their child were able to escape the apartment safely, and after learning Sommer had a firearm owner’s identification card and several firearms registered to his name, officers retreated to a safe location, established a perimeter and began evacuating the area.
The release added that officers learned there was a history of domestic disturbances at the apartment.
Clinton Rosette Middle and Camelot Elementary schools and the Ellwood and Nehring houses were placed on soft lockdown, the release said.
After being kept inside Clinton Rosette about 45 minutes beyond the typical school day’s end, students were released, Principal Tim Vincent said.
Vincent said the school usually lets out at 2:30 p.m., but students were held until about 3:10 p.m. as a precaution.
“We’re releasing them in a safe and efficient manner,” Vincent said about 3:15 p.m.
He said that there was a structured dismissal of students who take buses home or are picked up by their parents, but no students who live near the scene were allowed to walk home.
All DeKalb School District 428 schools other than Clinton Rosette dismissed at their regular time, according to a message sent to parents by District 428 Superintendent Jamie Craven.