Head of external relations for Foodstuffs NZ Antoinette Laird told the Herald that Pak'nSave security stepped in to break up the fight.
"I can confirm that, unfortunately, there was a fight between two customers at Pak'nSave Mangere last night. Thankfully, the store's security team were quick to step in to break it up, and it was over very quickly.
"Obviously, this behaviour is completely inappropriate and it was a rather unpleasant experience for other shoppers.
"According to the store no one was hurt, however, Police were notified and the incident is being investigated further."
Videos of the incident were posted to Facebook where they have received more than 100,000 views in just a few hours.
One Pak'nSave shopper said: "Sucks cause we shop there all the time and this is probably the first time I've known for this to happen there, Such a shame."
"Just disgusting grown a** adults acting like animals," another wrote.
The fight is being investigated by police, who are seeking witnesses.
"Police were called to an incident on Bader Drive, Mangere around 9.20pm last night after reports of people fighting in a supermarket," police said in a statement.
"The majority of the people involved had already dispersed before Police arrived. A person was spoken to by Police at the scene.
"Police are currently investigating the incident and making enquiries to identify those involved."
Police is asking witnesses to come forward and contact Mangere Police on 09 250 0500.
