TUALATIN, Ore. -- Police say a woman was killed and two of her co-workers were injured when the woman's estranged husband opened fire Tuesday at a Tualatin drug-testing laboratory before turning the gun on himself.

The woman was identified as Teresa Marie Beiser, 36, of Gladstone. Police say her husband, Robert James Beiser, 39, died of a self-inflicted gunshot wound.

Police Chief Kent Barker from the Tualatin Police Deptartment spoke to the press on Tuesday afternoon as part of a news conference on the shooting that took place just south of Portland.

Barker says Robert Beiser fired shots at the Legacy MetroLab drug testing center in Tualatin. He says the first officers on the scene found him dead inside the testing center.

The investigation is still ongoing.