An airfield groundskeeper here shot one of his bosses to death and wounded the other, then fled in a plane, dying minutes later when it crashed and burned.
Kenneth Jerolaman, 70, also shot at a neighbor of the Labate Aviation airfield before stealing the plane, authorities said.
Domenic Silverio was killed in the Saturday night shooting in Kintnersville, a Philadelphia suburb. His partner, Sal Labate, 60, was hospitalized.
The Cessna 172 crashed into the woods across the Delaware River in Hunterdon County, N.J.
Jerolaman had a history of arguing with his bosses, Trooper Douglas Tolbert Jr. said. The two partners probably were trying to fire him, Tolbert said.
The National Transportation Safety Board was investigating the crash.