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Two Gretna teens die in collision on Interstate 29 near Percival, Iowa

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Two teenagers from Gretna died Saturday night in a two-vehicle collision on Interstate 29 near Percival, Iowa.

Alice “Ali” Tupper, 16, and Joseph Tupper, 14, were both pronounced dead at the scene, according to the Iowa State Patrol. Three others were seriously injured.

Investigators determined that a 2020 Jeep Wrangler, in which the teens were passengers, and a 2021 Dodge Charger collided on northbound I-29 about 7:40 p.m.

Both vehicles entered the east ditch and rolled over.

The Jeep came to rest on its roof. The Charger came to rest upright in a field.

The Jeep’s driver, Garrett Grossman, 20, and two other Jeep passengers, Hannah Devitt, 18, and Sophee Devitt, 15, all of Omaha, were taken to the Nebraska Medical Center.

Grossman and Sophee Devitt were flown by helicopter to the hospital with life-threatening injuries. All five of the Jeep’s occupants were ejected or partially ejected from the vehicle, the patrol said.

Grossman and Hannah Devitt, the front seat passenger, were wearing seat belts, according to the patrol, but the three others in the Jeep were not.

The Charger was driven by Rogelio Martinez, 26, of Columbus, Nebraska. Martinez reported no injuries.

Martinez was arrested on suspicion of driving without a license. Alcohol is suspected to be a factor in the crash, a State Patrol spokesperson said.

Ali Tupper was a sophomore student at Duchesne Academy, according to a press release sent out by the school. A private prayer service was held Sunday evening for students and families.

Percival is about 40 miles south of Omaha., 402-444-1272

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