Yakima County Sheriff's deputies have arrested three people accused of robbing a pizza delivery driver near Zillah on Monday.

While investigating an unrelated incident deputies found information about the identity of the suspects and made the arrests on Wednesday.

Two boys have been booked into the Yakima County Juvenile Detention Center and an 18-year-old man has been booked into the Yakima County Jail on robbery charges. Deputies say they are still searching for a fourth suspect.

The delivery driver was hit with a bat but wasn't seriously injured.

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