Zayn Malik reportedly punched Louis Tomlinson in the face and cut his head after making a comment about his late mother during filming for a Netflix road trip show.
It was previously reported that the former One Direction bandmates had signed a multi-million pound deal to travel the US where they would discuss their lives and reflect on memories from their days in the band.
But according to The Sun, the series has been scrapped after the pair got into a physical altercation - with Zayn allegedly punching Louis in the face, resulting in the singer suffering a concussion and requiring medical treatment.
The publication reported that during filming, Zayn began 'acting up and mouthing off', which sparked an explosive row.
Zayn reportedly then made a comment about Louis' mum Johannah Deakin, who died aged 43 in 2016 after battling leukaemia.
'Louis was stunned and in shock,' a source said. 'As he went to move, Zayn then attacked him. Zayn punched him straight in the face, because he was wearing rings it cut Louis' head.'
Netflix is said to have axed the multi-million-pound show - which was reportedly set to be produced by Campfire Studios - following the altercation as the pair have reportedly not spoken since the incident occurred six months ago.
The Daily Mail has contacted Netflix, Campfire Studios, and representatives for Zayn and Louis for comment.
It was reported in January the former One Direction bandmates were believed to have 'fallen out' after they reunited for the brand new road trip show.
Sources close to the production revealed the pair were likely to discuss the tragic death of their friend and bandmate Liam Payne in the series.
An insider previously told The Sun of the show: 'This will be an absolutely huge show for Netflix and is guaranteed to whip 1D's global army of fans into a frenzy.'
'Although the idea of British boyband members doing a show about travelling across America sounds random, most of them now have strong links Stateside.'
'And it's likely to be a chance for some serious soul-searching and deep discussions about the incredible journey the group have already been on since they were formed on The X Factor 15 years ago.'
Zayn has lived in America permanently since 2018, while Louis devotes a large part of his time there thanks to his nine-year-old son with stylist Briana Jungwirth.
But according to The Sun , the series has been scrapped after the pair got into a physical altercation - with Zayn allegedly punching Louis in the face.
Sources close to the production revealed the pair were likely to discuss the tragic death of their friend and bandmate Liam Payne in the series.
It comes after it was claimed in 2021 that Zayn assaulted his ex Gigi Hadid's wife Yolanda during an altercation at the Pennsylvania home he shared with the model.
The former One Direction star pleaded no contest to the charges after allegedly pushing his former partner Gigi's mother into a dresser and calling her a 'fg Dutch slt' in September 2021.
Court documents revealed that he had to complete 360 days probation in addition to completing an anger management class.
On September 29 2021, Yolanda went to the property Zayn then shared with his ex Gigi Hadid while she was modelling in Paris.
Zayn was there, though it's unclear if their now two-year-old daughter Khai was. What transpired next is unclear but the pair started arguing and Zayn 'grabbed Yolanda' and 'shoved' her into a dresser.
He also verbally berated her, screaming: 'Stay away from [my] fg daughter' and calling Yolanda a 'fg Dutch st'.
He is said to have called Gigi in Paris and yelled down the phone to her: 'Strap on some fg balls and defend your partner against your fg mother in my house.'
A security guard was present for the exchange, according to the court documents, and Zayn screamed at him: 'Get the f out of my fg house copper.'
At another point he referred to fathering Khai with the 'fg sperm that came out of my fg ck'.
Gigi refused to comment in detail on the matter but released a statement at the time through her representative that said: 'Gigi is solely focused on the best for Khai. She asks for privacy during this time.'
Zayn posted a statement on social media that confirmed there was an incident, that he pleaded no contest (although it was unclear at the time that he'd been criminally charged) and that he was trying to protect his daughter.
He denied striking Yolanda, as had been reported by TMZ, citing an unnamed source.