The plane crashed near Box Elder Peak in American Fork Canyon, said the Utah County Sheriff’s Office in a press release.
The crash was seen by a man on a hike with his two sons, who called 911, the statement said.
“The witness said that the plane spiraled out of sight and moments later he heard the impact,” the statement said.
The Sheriff’s Office search and rescue team, a Utah Department of Public Safety helicopter and Lone Peak Fire and Ambulance were called to the scene. The four victims died under impact, the statement said.
The sheriff’s office said that Brummett, 35, was flying the plane. Alex Blackhurst Ruegner, 35, was also killed. Elaine W. Blackhurst, 60; and Douglas Robinson Blackhurst, 62, all of Riverton.
Brummett was drafted in the fifth round by the Phillies in the 2007 MLB draft and spent five years in the team’s minor league system, making an appearance in the majors.
In a statement, the Philadelphia Phillies said, “The Phillies organization extends its sincere condolences to the family and friends of former pitcher Tyson Brummett, as well as three members of the Ruegner and Blackhurst families, who died tragically in a plane crash yesterday morning. ”
The NTSB and the FAA are investigating the cause of the accident.