Robbery charges led to the arrest Wednesday night of a 23-year-old man and two 16-year-old youths. All three are from Sunnyside.
The Yakima Sheriff's office would not release the names of the individuals, as the case is under active investigation.
The case originated when a Sheriff's deputy responded to a malicious mischief call just before 8 p.m. in the 2000 block of Van Belle Road, near Granger, regarding an incident in which people from one car traveling on the road threw a bottle at another car, damaging its windshield.
While speaking with the victim in the case, the victim pointed out the suspect vehicle as it drove by.
The deputy at the scene then overtook the suspect vehicle and captured one of the suspects who attempted to flee on foot.
The Sheriff's office says another occupant of the vehicle was seen throwing a gun from the vehicle into some brush in an attempt to conceal it, as the deputy was dealing with the male that fled.
The suspect that fled from the vehicle was identified as the 23-year-old man from Sunnyside. The other two occupants of the suspect vehicle were identified as the 16-year-old boys from Sunnyside.
Deputies also learned that the same vehicle had been involved in an armed robbery.
In the robbery incident, the Sheriff's office said the suspects encountered another vehicle on the roadway and hailed the driver as though needing assistance.
After the victim vehicle came to a stop, one of the suspects pulled a gun and pointed it at the face of each of the two victims while simultaneously demanding the victims' personal property.
The suspect also pulled the trigger of the gun four or five times, while pointing the gun at the faces of the victims so that the hammer could be heard falling although the gun did not discharge.
The victims, brothers from the Prosser area, were able to make their escape unharmed and called authorities. It was seconds later that the deputy in the area spotted the suspect vehicle and engaged the suspects.
When the suspects were taken into custody and the revolver was recovered, it was determined that there was one unspent round in the cylinder in position to fire if the trigger had been pulled one more time.
The 23-year-old was identified as the suspect that had been pulling the trigger of the gun while pointing it at the faces of the victims. He was booked into jail for robbery and unlawful possession of a firearm.
Both 16-year-olds were booked into the Yakima County Juvenile Detention Facility on robbery charges.
It was later determined that the gun used in the robbery had recently been stolen in a burglary reported to the Yakima County Sheriff's Office.
In other Lower Valley activity since yesterday, deputies also responded to the report of a theft of a gun in the 200 block of Charvet Road, near Grandview.
Also yesterday, deputies learned that dogs reportedly killed 40 chickens, one calf and three turkeys in the 900 block of Woodin Road, near Sunnyside.