Three masked thieves used a boulder to smash their way into a Washington Township jewelry store early Friday morning.
Macomb County Sheriff Anthony Wickersham said surveillance video shows the trio smash out the front door of J&M Jewelry on 26 Mile Road just after 3 a.m.
The thieves used hammers to break into four jewelry cases.
Wickersham said the thieves were in and out of the store in under a minute -- 58 seconds. He didn't give a value on how much was stolen.
They were all wearing hooded sweatshirts and gloves.
No other descriptions were released.
Anyone with information on the theft is asked to contact the Macomb County Sheriff’s Office Detective Bureau at 586-307-9358.