I purchased an item in a gift shop while visiting my parents. Several days later I received a phone call from a person identifying himself as an investigator. He asked if I had been in the gift shop, I said I was. He asked if I found items that I did not pay for. I said I had not. He accused me of lying, encouraged me to cooperate by driving 1.5 hrs to the police station. He claimed to have video of me trying on rings, that I did not put one of them back. He asked me if I left the ring in the store. I was uncomfortable, even thought maybe it was a prank call, so I ended the call saying that I was going to get legal advice. The next day I called the number back to confirm that it was a police department. I spoke with another investigator asking if I had a warrant, his reply was that if the officer called me then he is still conducting an investigation so there wouldn't be a warrant. Can I simply ignore this?