Three teenage boys damaged the windows of a car in St Albans and took a set of keys while the driver was still inside.
Police are investigating the robbery, which took place between 8.50pm and 9pm on Sunday, March 4 in Griffiths Way.
The three robbers damaged the windows and stole a set of keys from the driver before making off in the direction of the Alban Way and Cottonmill Lane.
The suspects are described as black males between age 15 and 18.
Anyone with information should contact Herts police on the non-emergency number 101, quoting crime reference number F1/18/1086.
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