Burns said it appears that Junior, a 6-year-old quarter horse , fell through the tarp over the pool.
Farm owner Gloria Finglass that Junior may have escaped when a tree fell on a fence in the property, leaving an opening. Finglass had also offered a $1,000 reward for its return.
The horse belonged to Finglass's niece Kelly Strucko, 15.
"We are all so very sad for Kelly Strucko and her family," Burns wrote in an email to Patch.