Two blasts of gunfire a day and a half apart shattered windows of the headquarters of the Minneapolis School District, one time when the building was unoccupied but also later when employees were inside and near where the bullet came through.

School officials said police assured them that the building on W. Broadway between Fremont and Girard avenues in north Minneapolis was not the intended target in either the Sunday or Monday instances.

No injuries were reported, and no arrests have been made.

The first shot hit a window on the northeast side of the building about 3:30 a.m. Sunday, said district spokeswoman Gail Plewacki.

An e-mail from the building manager to her staff said the headquarters was unoccupied when the bullet broke a fourth-floor window and landed in an employee's workspace. Police said a desk was damaged from the gunfire.

The second gunfire incident occurred about 4:45 p.m. Monday on the other side of the building, again with a bullet shattering a fourth-floor window, according to police.

Two employees were "in the area of the window at the time of the shooting," a police report said. Plewacki said those workers were in the kitchen area.

Interim Superintendent Michael Thomas said Tuesday that his first question for authorities was whether the gunfire was meant for his building, and a lieutenant said police "have no reason to believe our building is a target of any sort."

Plewacki said police "are fairly confident the bullet early in the morning was from a house party that was nearby, [and] the second one came from two blocks away."

Thomas said there will be an additional police presence around the building in response to the gunfire. "We want to ensure safety. … It's something we take seriously."

Paul Walsh • 612-673-4482