A UA freshman died Friday night after a motorcycle accident on Mt. Lemmon.

Spencer Repp, 19, lost control while riding his speed bike on General Hitchcock Highway at milepost 12, before going over a guardrail, according to Deputy Tom Peine, of the Pima County Sheriff’s Department.

Police, who responded to the accident shortly after 5 p.m., determined speed was a factor. Repp was airlifted to the University of Arizona Medical Center and, despite sustaining serious injuries, was conscious at the time.

In Repp’s last tweet to a friend on his Twitter account he wrote, “ill tell you later homie … nothing a little reckless driving and excessive speeding cant make better” on March 29, the day of the accident.

“It appears he was going too fast, lost control and he ended up suffering injuries that ultimately killed him,” Peine said. “We know that people enjoy the mountain, especially motorcyclists, and we always and probably forever will ask people to use due caution.”

Repp attended a high school in Scarsdale, N.Y., and he was a freshman and active brother of the Delta Tau Delta fraternity at the UA.

Brandon Mejia, a journalism freshman and pledge brother of Repp’s, said he’d remember Repp, who was his pledge class president, for his upbeat and contagious nature.

“His character, his personality and who he was,” Mejia said. “The way he was as a person just lit up a room.”

Mejia and his fraternity brothers were notified of the accident after authorities informed Repp’s family, who were in New York. A family member then commented on a Facebook picture, Mejia said, writing who they were and that Repp had been injured and taken to a hospital.

Repp was pronounced dead later that night from his injuries, Peine said.

Repp, a lacrosse player in high school, loved sports and motorcycling, Mejia said.

“As hard as it is, he was doing something he loved,” Mejia said.

Repp had bought a GoPro camera to film his riding and to document his motorcycle travels, according to Ryan Locke, an economics sophomore, and president of the UA’s Delta Tau Delta chapter.

Locke said whenever Repp was in a room, he “brightened” up everyone’s day.

“Whenever I’d hang out with him, I’d always have a smile on my face because he was such a nice kid,” Locke added.

Kendal Washington White, interim dean of students, addressed the fatal incident.

“The University of Arizona lost two students this week in tragic vehicle accidents, and the passing of members of our community is heartbreaking,” Washington White wrote in an emailed statement, referring to Repp and Alina Bourger, who died Wednesday in a car accident. “This is a time for prayer and reflection for the family, friends and associates of these bright, young people.”