Six semi-automatic rifles were taken from the garage of an East Boise residence late on April 21 or early the next morning, police said.
Officers believe the suspect entered through a garage door that had been left open in a Columbia Village neighborhood off Highway 21.
All six rifles look similar in size and color. They are black military-style sporting rifles of various calibers.
Anyone with information is urged to contact Crime Stoppers at 343-COPS, or log onto www.343cops.com. Tips can also be made via the Crime Stoppers Facebook Page at https://www.facebook.com/CSofSWIdaho.
A citizen can remain anonymous. A reward of up to $1,000 is offered by Crime Stoppers for information leading to the arrest of criminal suspects.