Q/A: Someone Broke into My Office. What do I do Now?

My office was broken into last night. I use electronic health records, but we do store some protected health information for my patients in paper files. These files are not secured, so the burglars did have access to them. It did not appear that the files were touched as the burglars were looking for cash. What responsibilities to I have to my patients in a situation like this? Do I need to contact them and advise them that their PHI could have been compromised?