Hamilton police say they've arrested three people involved in a crime spree that hit 10 Hamilton businesses.

Investigators say two men entered eight gas bars and two variety stores between Dec. 12 and 15, confronted employees and demanded cash while flashing a firearm.

None of the victims were injured, say police.

On Thursday, after responding to two robberies downtown police were on "high alert," according to a media release. Then an officer saw a suspect vehicle pull into the parking lot of another gas station and noticed two men get out and walk toward the door.

When they noticed the officer the suspects got into a stolen car and drove away at a high rate of speed, say police.

Investigators say they found the vehicle nearby, along with the two suspects, a young person and a replica firearm.

Two 19-year-olds and a 16-year-old, all from Hamilton, are charged with robbery with a firearm and possession of property obtained by crime over $5,000.