This was on the local San Diego, CA news & posted on their website & facebook page on August 4th, I haven't come across any updates saying that they have found the owner...see link below
http://www.10news.com/news/tortoise...book&utm_medium=referral&utm_campaign=fanpage
http://www.10news.com/news/tortoise...book&utm_medium=referral&utm_campaign=fanpage