Colorado Springs police spokeswoman Barbara Miller on Wednesday said 28 vehicles, many packed with evacuee's belongings, also were broken into after residents fled the fire reported June 23.
An anonymous donor provided the reward money.
Officials this week declared the 29-square-mile Waldo Canyon Fire completely encircled. Officials say smoke may still be visible as areas inside the perimeter of the fire continue to burn.
The fire killed two people and destroyed nearly 350 houses when it burned into northwest Colorado Springs. The cause is still under investigation.
