CLACKAMAS COUNTY, Ore. - Detectives hope video surveillance photos and two abandoned cell phones will help catch two men who robbed a home in the Beavercreek area of Clackamas County.
   
In October of 2008, two men robbed Dana Williams at his home at gunpoint.
    
He said they took items from his medical marijuana growing operation.
    
But they also left behind evidence in the form of a cell phone that held a picture of one of the suspects. 
    
Then, in December, one of the men Williams said was involved in the first robbery came back with two other men and tried again to enter his residence by force.
     
In the meantime, Williams had installed a video surveillance system. He says security added to the door of his home helped keep the intruders out.

“They're here stalking my house on my property for, like, 35 to 40 minutes before they start beating on my door and almost successfully knocked the thing in,” Williams said. “If it wasn't for that board in my door I’d be dead for sure.”
    
In the second robbery attempt, the suspects left behind yet another cell phone behind, which is now in evidence with police.

Williams is offering a $1,000 reward per person identified in the case.