A man asked a clerk at a Braintree jewelry store for a closer look at two diamonds worth $20,000 apiece, then snatched them from her hand and sprinted to a waiting car, police said.
The thieves struck at about 11:30 a.m. today at the Zales at the South Shore Plaza, Braintree Police said in a statement.
The man ran to a car outside, which was occupied by another male, police said. A Braintree police officer saw the vehicle, which is described as a dark-colored 1998 Oldsmobile Cutlass with Michigan plates.
The officer attempted to stop the car at Capens Bridge, but the suspects fled northbound on Interstate 93, according to police. The officer trailed the car to East Milton Square, where he lost sight of it.
The incident is under investigation, police said.
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