Four people were killed Saturday in two separate crashes at an AirVenture airshow in Oshkosh, Wisconsin.

Daughter of two-time Super Bowl-winning offensive lineman Bruce Collie, Devyn Reiley, 30, and her co-pilot Zach Colliemoreno, 20, were flying a T-6 Texan, which crashed five minutes after take-off, according to the New York Post. The World War II plane fell from the sky, where it had reached 3,900 feet, and into Lake Winnebago around 9 a.m.

Devyn Reiley daughter of Super Bowl winner Bruce Collie is killed along with 20-year-old co-pilot when her WW2-era T-6 Texan plunges into a lake at Oshkosh air show: Two other people die in separate helicopter crash https://t.co/7RRxBVUCZZ pic.twitter.com/XTXjv685Nu

— Daily Mail US (@DailyMail) July 31, 2023

“I thought they were doing a trick at first,” witness Brayden Hiebing, who was fishing in the lake at the time, told NBC News. “I heard the plane start coming out of the sky, and it started like spinning and all of a sudden it just made a big splash.”

The Winnebago County Marine Units with Dive Rescue/Recovery Team members, along with the Oshkosh Fire Department, Winneconne Fire Department, Neenah Menasha Fire Rescue, Calumet County Sheriff’s Office, Wisconsin DNR, U.S. Coast Guard, and the U.S. Coast Guard Auxiliary responded to the crash, according to the Experimental Aircraft Association. Reiley and Colliemoreno’s bodies were recovered from the lake later that evening. (RELATED: Insane Images Show Passenger Plane After It Flipped Upside Down On The Runway)

For an unknown reason, the air show was able to go forward despite the deaths of the two young pilots. A little over three hours after their deaths, at 12:24pm, two planes crashed into each other, killing two people and injuring two others, the NYP continued.

Those killed were later identified as Mark Peterson, 69, and Thomas Volz, 72. The airshow was able to continue after the second set of deaths, which were reportedly not part of the show.