Police warn residents to keep their eyes open after a fourth violent robbery in Stamford Thursday.

Police say they are looking for a man and woman who held a gun in a family's face while walking out with a safe Thursday. Police believe this pair is also related to the robbery at Pat's Hubba Hubba's burger joint earlier in the week.

Police have two suspects in custody for two other related robberies of Garden Catering and Chin's Chinese Restaurant.

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