Medina County Jail officials investigating how three inmates overdosed in a holding area at the jail last Friday. 

It happened in a pre-booking area at the jail that has no cameras in it. A deputy was walking by the room and noticed two of the three inmates on the ground. 

The room is also an area where inmates are held prior to going through a full-body scanner. 

Officials think it was heroin that one of the men had hidden inside him. 

Now, Medina County looking at changing their booking process.