(WPXI) – A man has been charged in a Tuesday morning Blawnox shooting that killed a woman and left a man in critical condition. The Allegheny County Police Department says officers took Sean Black, 42, of Allegheny Township, Westmoreland County, into custody at Tri-Arc Manufacturing. He faces charges of homicide, attempted homicide, aggravated assault and recklessly endangering another person. Police accuse Black of walking into Tri-Arc Manufacturing on Fountain Street and shooting two people. Courtney Smith, 30, was pronounced dead at the scene. Another man was taken to the hospital. Police say Black and the two victims were employees at Tri-Arc Manufacturing and they believe the shooting is “domestic in nature.” Company officials say the plant will be closed until further notice.