Fine watches and other items were stolen from San Lab in Republic Street, Valletta. Their value was of some €11,000.
The police said the theft was noted at 7 a.m. today by a police patrol.
No other details were given.
Duty Magistrate Consuelo Scerri Herrera has been informed and she appointed a number of experts to help her in an inquiry she has opened.
Police investigations continue.