Eight members of the same family were killed in Ohio by shooting in the head, foreign media reports.
Most of the members were killed while they slept, and the killers are still at large.
Addressing a press conference Pike County Sheriff Charles Reader said, "I am still actively looking for a shooter. I cannot confirm that there is no one on the loose who is not involved with this. If he is, he's armed and dangerous."
Investigators discovered seven adults and a 16-year-old dead at four crime scenes, Ohio Attorney General Mike DeWine said. The victims included a mother slain while her 4-day-old child lay beside her, he said.