Authorities say the father, 45, didn't even know his daughter had a boyfriend or that the youngster had been sneaking into the home for more than a year.
When he heard noises coming from his daughter's bedroom Thursday morning and saw a stranger standing naked on the girl's bed, he swung a metal pipe. He then chased the teen out the front door and called police.
The boy was taken to the hospital where doctors closed a head wound with staples.
The father was charged with aggravated battery on a child and bonded out on $10,000.
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Information from: Daytona Beach News-Journal, http://www.news-journalonline.com