HOUSTON – Federal agents Thursday descended on the administration building of the Houston Independent School District and the home of the district’s chief operating officer, but it’s not clear what has prompted the investigation.

According to the FBI, agents arrived around 8:30 a.m. to conduct a “court-authorized law enforcement activity at the Hattie Mae White, HISD Administration Building.”

When KPRC 2 arrived at the scene, agents from both the FBI and the IRS could be seen walking in and out of the building.

HISD released the following statement about the law enforcement activity:

“HISD can confirm that the FBI is in the Hattie Mae White Educational Support Center this morning regarding a court-authorized law enforcement matter. The district is fully cooperating. There is no danger to students, staff or the community.”

At 11 a.m., video from SKY 2 showed at least one IRS agent at the Martha Springs Drive home of Brian Busby, who is listed on the HISD website as the district’s Chief Operating Officer. It was not immediately clear if the activity at Busby’s home was related to the activity at the HISD administration building.

Officials have said there is no danger to the public, students or staff.