Pennsylvania State Constable Thomas Pugh was attempting to arrest David Dickerson in Homestead on June 14, 1916, when Dickerson shot Pugh twice. He died the next day. Dickerson, who was wanted on a warrant for brandishing a weapon, was arrested at the scene.
Dickerson was convicted of second degree murder on February 9, 1917, and sentenced to 20 years in Western Penitentiary.
State Killings in the Steel City: The History of the Death Penalty in Pittsburgh 