Some schools in Colorado Springs School District 11 were on alert Friday afternoon after a man in his 20s was spotted in the Tech Building at Coronado High School, 1590 W. Fillmore St.

Shortly before noon, staff reported that an unknown man was running through the building, said D-11 spokeswoman Devra Ashby. School security officials were called, and the man ran off the campus and headed east toward the King Soopers at Fillmore Street and Centennial Boulevard, Ashby said.

According to some reports, the man spent about 15 minutes in a girls' bathroom at the school. He was wearing a brown trench coat that he removed while running away, revealing he had on a black Duck Dynasty hoodie.

Nearby Holmes Middle School alerted its staff to the incident, according to an email obtained by The Gazette. Teachers were instructed to keep classroom doors closed and locked and to remind students to not allow strangers into the school.

Colorado Springs Police were called to investigate, Ashby said.