A single-engine plane crashed Friday in remote eastern Alberta and all five people aboard were killed, including employees of a company hit by a fatal crash last year. Four men and one woman were confirmed dead in the crash of the PA-46 Piper Malibu, which went down in the morning near Wainwright, 140 miles (225 kilometers) southeast of Edmonton, the capital of Alberta province. A search involving military and police was launched after air traffic controllers saw the plane disappear from their radar. The plane, owned by A.D. Williams Engineering, was carrying three senior employees and two contractors from Alberta's capital to a meeting in Winnipeg, company spokeswoman Sue O'Connor said. She declined to identify the dead.