The search for this missing elderly woman in northern St.Johns County ends in tragedy. Deputies believe a body they found in a retention pond .. is her. 3 The Sheriff's Office is waiting for the medical examiner to confirm the body is that of 85-year-old Twila Joyner. When she was reported missing yesterday .. we were told Joyner suffers from Alzheimer's. It's believed she wandered from her home in St. Johns to a retention pond on Cunningham Estates Road in Fruit Cove. The pond is less than a mile from her home. Channel 4's Ashley Harding is joining us LIVE .. she checked with the Alzheimer's Association about how this disease can put an elderly patient at risk .. Ashley. 3 3 3 We're here in the woods about a half mile from where her body was found. It's actually very possible that she may have walked through here.We were told, Twila Joyner had wandered before and apparently this is very common in people who suffer from Alzheimer's and other forms of dementia. The hope now is to prevent another tragedy. 3 21-25 TOO SHORT00:10--00:15 "I walked outside and they told me they found the body of the missing woman." TRACK Holly Fagan tells she was among the many volunteers who had searched for 85-year-old Twila Joyner. This morning, she says she woke up to find St. Johns county deputies at the retention pond in her backyard...saying they found what they believe to be Joyner's body. 01:27--01:35 "It just breaks my heart that I didn't find her or I didn't see her.It's heartbreaking." TRACK Authorities say rescue teams had searched neighboring areas --take out high and low, --- looking for Joyner... who they say had been diagnosed with Alzheimer's Disease.55:55--56:05 "We're taking our time. We're going to treat it as a crime scene. It is an active death investigation. Nothing overt at this point in time to say that there is any foul play." We spoke on the phone with officials from the Alzheimer's Association who tells us about 140,000 people in Central and North Florida suffer from Alzheimer's or some form of dementia and wandering away is very common. The key is keeping your loved ones safe. Some valuable tips for caregivers to know include: -- place locks on doors up high or out of sight --don't leave car keys where they can be easily picked up --observe your loved one and know what time of day they're most likely to wander away TRACK Most importantly, have a plan in motion.12:53--13:17 "Realizing that 6 out of 10 people with dementia will wander, it's not a question of whether or not they've done it before, it's just a question of when they will do it most likely. Be cognizant of it, make plans in advance in preventing a person from wandering outside of the home. Then make a plan in case the worst happens." TRACK For Holly Fagan, who had a loved one suffer from the same condition...her thoughts are with the family." 01:53--02:02 "It is, it's really hard to see your loved ones go through. It's like having a child again. It's just heartbreaking." There are also some very good programs to keep in mind if you have a loved one who may suffer from some form of dementia. I want to now show you some footage released from the st. Johns county Sheriff's office. This program is called Safe Trak.It's basically a tracking device worn on the wrist or the ankle. It allows the St. Johns County Sheriff's Office to track the person within a two mile radius. There's also a great program with the Alzheimer's Association called Medic Alert +Safe Return, it's a piece of jewelry with a nationwide toll free number which can help reunite the person with their family.These are both great life-saving tools. To learn more, you can go to our website: news4jax.com. Live, AH, Ch 4, TLS. 3 Ashley ... what do we know about her living situation? did she live alone?