A 14-year-old boy died after he ran into a statue of a bull and impaled himself on one of its horns during a late-night game of hide-and-seek.
Miguel Martinez was playing with friends in darkness on the campus of a university in Texas.
He suffered a fatal chest wound after running into the horns of one of the statues.
The teenager had been staying with his best friend Jeremy Warren and his family when they all went for a walk at around 3am to the National Ranching Heritage Museum, at the campus in Lubbock.
Miguel's heartbroken mother, Judith Leseberg, told KCBD news: "He just happened to trip over one of the lights. I guess he lost his balance and he went straight down on one of the horns.
"It's hard for all of us. No mother expects this to happen to their child."
Friend Jeremy's mother, Marenda Podhorksy, who was with the group when Miguel was fatally injured, described his death as 'pure accident'.
The teenagers had been awake way past midnight, eating sweets to celebrate Ms Podhorksy's boyfriend's birthday.
"Maybe we shouldn't have been out that late," she said.
"It was pure accident. We'd been playing for like an hour."
Ms Podhorsky said she heard a thump and thought Miguel might have been knocked down by the bull's horn during a game of hide-and-seek.
But she saw the teenager's chest wound and knew he might die.
University police are investigating the boy's death.