Police are offering a $1,000 reward to anyone able to help them solve a violent beating in a Tempe townhome.
The assault was caught on surveillance video from an elevator at a townhome near 6th Street and Mill Avenue.
Police said he followed the victim into an elevator and beat him in August. He punched the victim at least 25 times and delivered several blows after the victim was already lying on the elevator floor.
Police are looking for a suspect shown on the tape who looks like a White man in his early 20's.
Officers said they also want to talk to a person of interest who was seen leaving with the suspect. He is described as a Black man in his early 20's.
TIP LINE: 480-WITNESS
Warning! The surveillance video is violent.