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It didn't take Boston police long to track down three suspects in an armed convenience store robbery.
Authorities say the men were all wearing court-ordered GPS devices for unrelated cases, which placed them inside the Dorchester store and allowed investigators to track them to an apartment a block away.
Police say the suspects entered the store at 6 p.m. Wednesday. All three wore masks and one had a gun. They made off with cash and cigarettes.
All three pleaded not guilty at their arraignment Thursday. Two had their bail revoked in prior cases. A third is being held on $50,000 bail.
The prosecutor says their GPSs "pinged to the store at the time of the robbery." Police also found evidence in the apartment that tied them to the robbery.
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