Police are searching for a group of jewel thieves who have robbed several high-end jewelry stores in Maryland and Washington D.C., The Associated Press reports.

The robberies all happen during regular business hours in broad daylight. Men, wearing ski caps and masks and at times brandishing guns, smash glass cases and grab thousands of dollars worth of jewelry, the AP reports. They enter and make their getaway all within a few minutes.

Before leaving the stores, they have been demanding the video surveillance tapes, the AP reports.

Police in Montgomery County, Maryland, tell WTOP Radio in D.C. that they are investigating two incidents that fit this pattern. The group has also hit stores in Prince George’s and Charles counties as well as D.C., the AP reports.

JCK