Aldi shoppers have been left horrified after an alleged knifeman was tackled to the ground following an attack on three people outside a supermarket.

An Apprentice star is said to have led efforts to apprehend the knifeman following the incident in the Southampton supermarket's car park.

Sohail Chowdhary, who appeared on the Apprentice in 2022, now runs a martial arts school in the area.

He raced in to lead the alleged knifeman in circles so those around could get to safety.

The businessman and a colleague of his rushed outside from his gym, Limitless Martial Arts School, along with two students, after hearing the events about 12.45pm on Sunday.

Three people were left injured after the alleged attack outside the Aldi Supermarket in Belvois Valley in Southampton.

A 46-year-old man was arrested by police and charged with three counts of attempted murder.

He was also charged with one count of attempted grievous bodily harm and three counts of threatening a person with a blade or sharply pointed article in a public place, as well as possessing a blade or sharp pointed article in a public place.

Hampshire Police officers raced to the scene after reports a man was threatening people with a knife.

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Once at the scene, the man was arrested.

He was described as being of south Asian background, aged in his 40s and about 5'11 with black hair and a beard.

The man was wearing a red shirt and navy blue jacket when the alleged assault took place.

During the alleged rampage, three people were injured with witnesses saying there was blood on a blade.

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When the man was wrestled to the ground by police, an officer was seen pointing a taser at him.

It is unknown whether it was actually deployed.

The Aldi has since been cordoned off as officers investigate the alleged attack.

Mohamed Kamal, 16, recently finished his studies at Cantell School and rushed over to help, taking people into the Aldi store.

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Mohamed told the Daily Echo that "he just kept running that same slow pace".

“It was a bit scary, he was close at times," he added.

“There was a point it wasn’t even scary any more, it was just weird.”

The chase of the alleged attacker last about 15 minutes in the Aldi car park.

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Chowdhary said in an Instagram statement that "earlier today, an incident took place across the road from our martial arts unit in Southampton".

"A man (allegedly) wielding a large knife was attacking members of the public," he added.

"A few of our team stepped in and undertook our duties to make sure the injuries caused to the public were minimal."

Chowdhary thanked three of his students "Viktor, Mohamed and Jamie" for stepping in and added he "couldn't be more proud".

Investigating officers are now looking for witnesses to assist with inquiries.

A Hampshire Constabulary spokesman said: "We know there were a lot of people in the area at this time and we want to hear from anyone who can help with our inquiries."