Crimes have been escalating around the holiday season.

One crook took advantage of an elderly couple expecting a package.

He posed as a UPS worker and hid a gun inside a box he was supposedly delivering.

Once the grandmother, 60, opened the door, he barged his way inside.

He forced her and her husband, 63, to tie up their grandchildren – ages 6 and 8.

The thieves stole iPads, an iPod, personal documents, and $7,500 in cash.

They also stole their grandchildren’s piggy bank.

The four were left unharmed although the children were left “physically shaking.”

Police are asking anyone with any information to call 1-800-577-TIPS.