Visit msnbc.com for Breaking News, World News, and News about the EconomyA man armed with a rifle opened fire at a drug testing lab in Tualatin, a suburb of Portland, around 11 AM this morning. According to KGW, two people were injured and the suspect was one of two found dead at the scene, apparently from a self-inflicted gunshot wound.Neither the identity of the shooter nor the victim has been released. But the Oregonian reports that the woman killed was in a relationship with the shooter. And that the other victims, like the casualty, were employees at the clinic.