The Facebook page accused the Englewood Police Department and the Arapahoe County Sheriff's Office of brutality.
"I've spent the entire day now on this," Englewood Police Chief John Collins said.
He says his department and the Arapahoe County Sheriff's Office were inundated with emails about what happened to Robin Nosaka.
According to the Facebook page, police beat him severely and he was in the ICU with a broken eye socket, broken bones, a broken jaw and his mouth was wired shut.
Collins says what actually happened is much different.
"He had a cut on his forehead and that was essentially it," Collins said.
Police released the mug shot of Nosaka the night he was arrested.
According to Collins, on Friday night, Nosaka ran from police. They shot him with a Taser and he got a cut on his face when he fell.
"I'm very sorry that this got out of control so quickly," Tae Nosaka, one of Robin Nosaka's sisters, told 9NEWS.
Nosaka's sisters say they learned the truth when 9NEWS contacted them on Monday. They are now apologizing for their message that they said went out too soon and too fast.
"I'm really sorry that this Facebook stuff happened and all of that got wild before the truth could be told. And I'll do what I can in my power to take this off my page to help get the truth out there, even though it's going to be hard," Tae Nosaka said. She planned to contact her younger sister who created the Facebook page and ask her to take it down.
"Our reputation has taken a hit and it's just unfortunate," Collins said.
He says he hopes this case spreads another message, one of warning to Internet readers.
"Today is a day for lessons learned. I don't necessarily just want the emails to stop, I want people to learn from it," Collins said.
The Facebook page was down by Monday night.
Robin Nosaka remains in the Arapahoe County Jail. He is accused of burglary and failing to register as a sex offender.
(KUSA-TV © 2011 Multimedia Holdings Corporation)