On the night of Nov. 4, a 14-year-old boy was arrested for allegedly murdering his sister – 15-year-old Aspen Guerts – in Claremont, California, after police found him walking away from the crime scene at his home.
The teenage boy allegedly stabbed his sister with a kitchen knife, killing her, the Los Angeles Times reports. His motive is still undetermined.
“The story is kind of shaky," Lt. Mike Ciszek, a detective with the Claremont Police Department, said, according to the L.A. Times. “We only have his side of the story."
Video footage from AIR7 HD shows a white sheet covered over a body in the backyard of the siblings’ home, ABC 7 reports.
A neighbor said that the family had lived in the home for six or seven years.
"They're very nice people, and they're very good parents," the family’s neighbor, Martina Ebert, told the news station. "It's just a tragedy. They're really wonderful parents. It could happen to anybody."
Cisznek reported that the parents and a third sibling were not home when the murder occurred.
"By all accounts, it seems like they were a pretty tight-knit family," he said. "It’s just kind of a shock."
According to law enforcement, the municipal of Claremont has not had a homicide since 2009. The Los Angeles County Sheriff's Department was brought in to take over the investigation.