Police arrested three people accused of a series of armed robberies in Oakland Monday.
The men allegedly assaulted one person and stole that person's cell phone.
Five minutes later, the men robbed another person at gunpoint, and took off in a gray Hyundai sedan.
Police tracked the first victim's cell phone, which led them to a home in the area of Hillmont and Sunkist drives.
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They arrested three men, and are looking for a fourth.