CNN
Indian River County, FL - Two men in Florida are under arrest, after allegedly paying a homeless man to allow them to hit him.
The incident was captured in a video that surfaced on Facebook.
Police say the video shows Nicholas Marr punching the homeless man, who is mentally disabled, and knocking him out.
PHOTOS: Beating of homeless man lands two men in jail
Authorities say William Gregory then slaps the man, before Marr begins to drag him by the arm.
Police say the pair told the victim they would pay him $20 if he would let Marr slap him while Gregory recorded the incident.
The video was posted to Gregory's Facebook page.
Someone who saw it reported it to police.
Sheriff's deputies found the victim, who could barely remember the incident.
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