File this one under "unlikely" -- or possibly "defective."

A home security system, of all things, went missing from a locked room of a controlled-entry apartment building earlier this week.

The building, located in the 4700 block of North 19th Street in Bismarck, is managed by Goldmark Property Management.

The system included a flat-screen monitor and digital recording system and is worth approximately $3,200.

There was no sign of forced entry into the room.