A gun magazine with three .22 caliber bullets was discovered Tuesday in a closet in a fourth-grade classroom in the building shared by two Boulder elementary schools, Boulder Community School of Integrated Studies and High Peaks.
The magazine was found in a classroom closet at Boulder Community School of Integrated Studies, 3995 E. Aurora Ave., according to a letter sent home to parents by the schools' principals.
A student who dropped a glove while hanging up his coat discovered the magazine next to the closet wall when he went to retrieve his glove.
Police searched the classroom, the playground and other common areas in the school. Nothing else of concern was found, according to the letter.
School officials are working with Boulder police to try to determine how the magazine ended up at the school.
"This appears to be an isolated incident and we have no reason to believe that students, staff or parents are in any danger at this time," the principals wrote in the letter.
Boulder police officers were outside the school Wednesday morning, and an increased police presence in the area around the school is planned for the rest of the week.
Police and Boulder Valley School District security director Chris Wilderman also were available Wednesday morning to answer parents' questions.
Boulder Valley spokesman Briggs Gamblin said the district and the police answered as many questions as possible, given that it's an active investigation, and eliminated some of the anxiety of parents.
"It was upsetting and everyone understands that," he said. "We want to reassure people that the search of the room and questioning staff and some students didn't represent the end of the investigation. We need to find out how the magazine got there and why it was there."
Boulder Community School of Integrated Studies third-grade parent Ingrid Walsh said the news was disconcerting, but she was impressed with the response of both the school and police and doesn't want to jump to conclusions.
"There were police all over the school today," she said. "We know the school and police have a handle on this and are doing what they can. We're just waiting to see when there's more information."
Anyone with information is asked to call the Boulder Police Department at 303-441-3300. To remain anonymous, call the Colorado Safe2Tell line at 877-542-7233.