SWAT Officer training is the explanation behind numerous reports of explosions on south Washington street, just before 9pm Thursday.
The sound was reported to Sonora Police from at least four downtown locations, including the KVML Studios.
One of the reports to investigating officers said the sounds may have been coming from the area of the cemetery.
A second series of explosions was heard, by officers and citizens, at 9:15pm. As many as six “pop” sounds were reported by police in the field.
Officials say SWAT Team training was on the calendar for Thursday, and it´s believed flash-bang devices were being detonated as a part of that training.