NAPLES, Fla. - No more than 30 seconds after he shot his parents, Alex Crain knew he was the killer.
But he did not know why.
In a 911 tape obtained Monday by NBC-2, the then-14-year-old wails and tells a dispatcher he has no recollection of the shooting. He said he did not know where he got the weapon.
"I was sleeping and the next thing I know I had a gun in my hand and my parents were on the ground," he said.
Since the day Crain shot his parents, Thomas and Kelly Crain, in December of 2010, neither he nor his attorney has revealed a motive. And the 911 tape shows there might not be one.
In a 16-minute conversation with an emergency dispatcher, Crain said he was not on medication, was not upset with his parents and was not arguing with them. He said he was home sick from school. He told the dispatcher he shot his parents in the bathroom, although previous reports said they were killed in their bedroom.
"I love my parents," he said. "I love my parents."
"Alex, sometimes things happen and we don't understand, OK?" the dispatcher reassured him. "And you did a very good job by calling us immediately after the incident happened."
In the time it took for deputies to arrive at his Golden Gate Estates home, Alex Crain told 911 to hurry and repeatedly asked what was taking so long.
"Why aren't they getting here?" he asked. "My parents aren't going to make it."
"Alex, we're trying to get there as fast as we can, OK," the dispatcher said.
Later that morning, in the back of a patrol car, Crain realized his parents were dead.
"That's why there's no EMS," he said in an observation caught on a dashboard camera tape.
Crain, who was charged as an adult, was sentenced to 20 years and two months in prison in April after pleading no contest to two charges of manslaughter. Crain's attorney, Brian Bieber, describes his client as "suffering from a severe mental illness."
Bieber would not say if that illness involves a sleep disorder or if the 15-year-old has a history of sleepwalking.
"I've had plenty of conversations with Alex, with Alex's doctors, about his history and growing up and frankly, it's none of anyone's business," he said.
Despite Bieber's statements about his client's mental state, prosecutors said at sentencing they charged Crain as an adult "when it was determined there really weren't any mental issues that gave us concern."
Crain, who will turn 16 in about two weeks, is "now presently being evaluated" in the Department of Corrections' Reception and Medical Center in Lake Butler, Bieber said. Later, he will be transferred to a more permanent prison location.