Gardai are investigating after a security guard was assaulted at Tesco Express in Crumlin last weekend.
An eyewitness told how a gang of up to five teenagers were stopped coming out of the shop on Saturday evening with one getting into a scuffle with a security guard.
The witness, who didn't want to be named, told Dublin Live: "I'd just left the store and was in my car right out front.
"I saw the security guard slam the door to keep one of the teens inside, the others had run off down the street.
"I could see pushing a shoving going on inside between staff and the teen who was lashing out.
"His friends came back, shouting and banging on the door.
"The security guard was trying to hold doors closed but they forced them open and pushed their way inside.
"There was three staff members dealing with it, one of which was a security guard and they were punching and kicking him.
"They got good punches and kicks in on him, they had enough staff sorting it out that I didn't want to get in the way. I thought I did my part by calling the guards."
The security guard is believed to have suffered some cuts and bruises but was not seriously hurt.
Gardai investigating the incident said they are following a definite line of enquiry.
A garda spokesperson said: "Gardai in Crumlin are investigating an assault that took place in a shop on Saint Agnes Road Crumlin on Saturday the 12th of May at approximately 8.20pm.
"A security guard was assaulted by a male, teens. Gardai are following a definite line of enquiry."