The video, which was published by The Sun showed the man from South Yorkshire fighting in the street and trading blows with another man.
The cameraman can be heard shouting: "Go on Haris" before the contestant hit the man, saying: “I’m not a bully, I’m not a f***ing bully, on my mum’s life.”
Before the official dumping was made public, a source told the publication: “Haris was booted off Love Island last night.
“There was a dumping and he got the chop.
“It is, in part, a relief for the show's bosses in light of the video of Haris in a street fight.”
Haris Namani opens up about viral fight after being dumped from the Love Island Villa
In a post-dumping interview with broadcaster ITV, Haris was asked: "What is your response to the reports following a video that was shared of you?"
In response, he said: "I’m devastated that this video has been seen, it’s not a reflection of my character.
"I’m not someone that goes looking for fights and I didn’t want to be in that situation. This was a heat of the moment thing. The video doesn’t show everything that happened.
He added: "Afterwards we met up and we cleared the air; we’ve shaken hands and we get along now. It’s not something that would happen again.
Haris from Love Island's 'girlfriend' shares videos of relationship before villa
The Love Island star was accused of leaving his girlfriend to appear on the popular dating show.
The claims arose when fans called out Namani for saying that he had no girlfriend while in the villa, despite his alleged ex, Courtney Hodgson being uncovered online.
Eagle-eyed fans spotted Haris in various loved-up clips alongside the fashion model in which he enjoyed romantic dinners and couples holidays.
In one video which Courtney shared on TikTok, the two can be seen together on a flight before it transitions to the pair smiling in the sun aboard a jet ski.
Viewers at the time rushed to the model's comments section to react.
One fan wrote: "Omg as if it's Haris going in Love Island.
"Girl get yourself in casa amor or as a bombshell your stunning!"
A second user chimed in: "Love island guy who's not had a relationship? Hmm she looks like his gf to me."
While a third person added: "If she doesn't go on Love Island as a bombshell I am sooo done."