Possibly, it depends. First you would have to determine what their status was as a visitor on your property. The visitors status will determine what duties you owed them while they were on the property, and can help determine if you have liability or not as the property owner. Typically, invitee visitors are owed the greatest duty of care, then licensees, and trespassers are owed the lowest duty of care. These three terms do not always mean what you think they mean and there are centuries of case law specifying their meaning. If someone is injured on your property, you will need to contact a premises liability defense attorney to discuss the case.