PIKETON, Ohio (AP) – Authorities investigating the slayings of eight people from one Ohio family say they’re operating under the theory that there were multiple attackers.

Local and state investigators have released few details about the April shootings near Piketon, saying they don’t want to jeopardize their chances of catching and convicting whoever’s responsible.

A spokesman for Ohio’s attorney general confirms investigators are working with the theory that it wasn’t a single attacker.

The Columbus Dispatch reports Pike County Sheriff Charles Reader also referenced the suspicion of multiple “killers” Thursday while testifying in a court hearing related to custody of two of the three young children who weren’t harmed in the attack.

They’re relatives of the seven adults and teenage boy from the Rhoden family who were found dead at four homes April 22.