From the article:
A 9-year-old boy arrived at school Monday with a grisly story: His mother and sister were dead at their home four blocks away.
Minutes later, police found the bodies of a 10-year-old girl and her mother – along with a blood-covered father and an unharmed 4-year-old boy – in a modest home in a West Las Vegas neighborhood, authorities said.
The five people belonged to a single family, police Officer Jacinto Rivera said.
The man, who was hospitalized with a head injury, was not immediately identified as a suspect or charged.
Police wouldn't immediately say how or when the slayings occurred, but Rivera said there was no immediate evidence of a break-in at the home or that a suspect was on the loose.
One neighbor, Lucinda Jackson Griffith, said she heard at least one gunshot early Monday.