THIS is the terrifying moment a teen thug presses a machete into a boy’s neck at a McDonald’s restaurant.

Four teenagers have been apprehended in relation to the machete incident, which was succeeded by a brutal altercation in the bathroom of the fast food outlet in Melbourne, Australia.

The saga was filmed on a mobile phone, and the footage is shocking.

It shows a group of teens jostling in the toilets when one, wearing a yellow t-shirt, whips out the evil blade.

He hands it to a pal who forces the victim, wearing a blue t-shirt, to his knees.

While the lad is down, the wielder presses the foot-long knife horizontally into his neck – but thankfully appears not to slice him.

He then taps him twice on the neck, yelling out threats all the while.

A later clip shows two of the teens fiercely pummelling each other with a flurry of fists.

One lad is punched to the ground, but the yellow-t-shirt teen keeps raining down with blows.

The lawless behaviour happened inside a McDonald’s toilet on Monday afternoon in the Truganina area of Melbourne.

Victoria Police believe up to five teens could have been involved in the assault, but they have arrested four and only two were charged.

A spokesperson mentioned: “One of the boys faces charges including aggravated burglary, motor vehicle theft, false imprisonment, creating child abuse material, assault with a weapon, and possessing a controlled weapon.

“He was bailed to appear at a children’s court at a later date.

“A second boy is expected to be charged on summons.

The two victims of the chaos were both 15-years-old, and neither of them were injured.

Victoria has been beset by a surge of knife-related crimes, prompting the local authorities this week to implement a statewide ban on the sale of machetes.

Premier Jacinta Allan announced the measure following advice from police on the same day as the McDonald’s mayhem.

She said: “In Victoria, community safety comes first. We must never let places we meet become places we fear.

“I hate these knives, and I will keep introducing as many laws as it takes to get them off our streets, out of our shops and out of our lives.”

The law was meant to come into force on September 1, but was brought forward in light the recent spike in incidents.