FRESNO, Calif. — A man stormed into a medical office building in downtown Fresno and fatally shot the mother of his five children before he killed himself, police in central California said Tuesday.

In a chaotic scene, people hid in bathrooms at the Eye Medical Clinic and were seen climbing from the building’s ground-level windows as police arrived.

Arriving officers heard one gunshot, Fresno police Lt. Joe Gomez said. To help people inside the building get out, police smashed windows and helped people climb to safety, Gomez said.

Fresno Deputy Police Chief Pat Farmer said there are two businesses in the building — a pediatric clinic and an eye clinic. There were 16 employees and patients inside.

“Several people were running out of the building frantically,” Farmer said.

No other injuries were reported, Gomez said. Investigators found a shotgun inside the clinic, Gomez said.

Gomez identified the shooter as Neng Moua, 43, of Clovis. The victim is a 33-year-old woman, but her name was not released. Farmer said the woman was shot multiple times at close range.

The exact nature of their current relationship was not immediately clear.

Farmer said the couple did not live together but have five children together. The woman also had two other children.