What does my bike have to do with the property owner’s foreclosed property and what can I do?

Property owner whom I was renting from didn't pay 3 months of mortgage after I left. I have a commercial auto business. I took my business elsewhere and left a motorcycle inside the property owner’s lot, where I used to repair cars. The motorcycle was left there because I couldn't reach the owner who was going to transfer the title to me. I already have the title. How can I get the motorcycle back? It's been sitting in the lot for a little more than a year. The security guard that used to guard the lot said that it’s the banks property now.