UNDATED (CNN) -- James Edwards, 15, 16 year old Chancey Luna and 17-year old Michael Jones are charged with killing an Australian student because "they were bored." More disturbing details are emerging about Chris Lane's teenaged killers.
Sarah Harper says, "There's no way to describe what happened, I mean, it's the hardest thing you could ever imagine happening."
Sarah Harper is speaking out about the horrifying killing of her boyfriend Chris Lane, a 23-year-old Australian baseball player living in Oklahoma. She says, "There's still a lot of shock and disbelief, and a lot of anger and sadness."
Harper and Lane's family are trying to make sense of this tragedy as new details emerge about the three teens charged with his death.
Just three days before the shooting, James Edwards, the youngest of the three, tweeted that he and his friends were ready to take some lives. Back in April, he posted "90 percent of white people are nasty".
And in a video posted on Vine in May, Edwards is seen showing off an assault rifle.
It was the oldest suspect who admitted their twisted motive to police. Duncan Police Chief Danny Ford says, "He basically said we were at the house, the young man run by the house, someone said there's our target, they got in car, followed him and shot him. 'We were bored.'"
Killed for sport, leaving family and loved ones to pick up the pieces. Harper says, "It's just so surreal that anybody could do something like this. He was an amazing person that was taken way too soon."
The oldest suspect told police where they tossed the gun, but when investigators searched the apartment complex they didn't find it. They did find ammunition hidden in their car though and another gun- a shotgun- hidden under the spare tire.