The four cases occurred over a period of several days. In all the cases Kroll’s three pit bull dogs are believed to be the dogs that attacked citizens in the 100 Block of White City. On all four occasions the victims went to the hospital for treatment of their injuries. One of the victims in the vicious dog attacks required emergency surgery to repair the damage he received during an attack. Sandra Rene' Kroll was charged with Attack by Dog Causing Serious Bodily Injury, Felony 3 and booked into the Gregg County Jail without incident.