Katona and Natasha Hamilton were forced to flee the stage at the Engine Shed for ‘safety reasons’ when bottles were hurled from the crowd.
The incident kicked off when the girls were singing Eternal Flame.
Video footage shows Katona calling out the culprit before Hamilton storms off saying: “Alright, come on. Bye.”
Katona tweeted: “Well that was fun!! What a shame when some young boy going through puberty thinks it’s manly to throw bottles at girls!! #waiting4balls2drop.”
Well that was fun!! What a shame when some young boy going through puberty thinks it's manly to throw bottles at girls!! #waiting4balls2drop— Kerry Katona (@KerryKatona7) March 9, 2017
Hamilton posted: “Gutted that tonight’s gig ended early, 2 all of u who came to see a good show, thank u 4 yr support but when it’s not safe we have 2 leave x.”
Gutted that tonight's gig ended early, 2 all of u who came to see a good show, thank u 4 yr support but when it's not safe we have 2 leave x— Natasha Hamilton (@NatashaOfficial) March 9, 2017
She later blasted one user for apearing to laugh at the girl group for leaving the stage.
They wrote: "As if @KerryKatona7 and @NatashaOfficial left @QUACKLINC because a few plastic bottles flew their way."
Hamilton replied: "Wow, what a guy!..So you think that's acceptable behaviour? I don't think you'd like to watch your girlfriend pelted with c***?"
Angry fans vented on Twitter with one tweeting: “Canny believe the absolute scenes at @QUACKLINC tonight, how dare lads throw bottles at the gems that are atomic kitten.”
Another posted: “You were amazing tonight in Lincoln. Sorry for the disrespectful people! As long as you know you did an awesome job!”
James Brooks, Chief Executive Officer of the Student Union, branded the behaviour “appalling” and said the culprits were “immediately removed”.
In a statement he said: “The Engine Shed is appalled by the behaviour that took place at last night's Atomic Kitten performance and apologises unreservedly. We are sending flowers to Kerry and Natasha as a token of our regret and are investigating the incident as a matter of urgency.
“The students involved were immediately removed from the Engine Shed. The situation was dealt with swiftly and professionally by the Engine Shed staff with no further issues on the night.
“A number of students have taken to social media to express their anger at the action of a few individuals and we are keen to emphasize this behaviour is not demonstrative of the majority of our students. Kerry and Natasha are big favourites in the city as the huge attendance at last night’s show demonstrated.”