They are known for being the scariest clowns in the world and now DM Pranks are back with quite possibly their most terrifying tricks yet.

The notorious YouTube channel hosted by Matteo Moroni, took to Las Vegas for its latest video and terrorised locals in a series of increasingly elaborate pranks.

For the clip Matteo joined forces with the owner of the Halloween-styled theme park, Fright Dome, Jason Egan, who invited the Italian over for the collaboration.

Matteo joined forces with the owner of the Halloween-styled theme park, Fright Dome, Jason Egan, for the video

The prankster travelled to Las Vegas with his cousin Bryan, who helped set up the cameras and film the action

The prankster travelled to Vegas with his cousin Bryan, and the team, including a number of Fright Dome actors, got to work.

According to Matteo, who spoke to MailOnline about his most recent video, the ideas for the pranks were formulated in April after he had organised the collaboration with Mr Egan.

He said: 'The prank scene is saturated and I wanted to do a few things differently and in a more professional manner.'

In the clip, entitled Killer Clown 6 - Episodes From Vegas, the clowns hide in a petrol station, which was leased to the team for a couple of hours, and wait for a woman to notice a bloodied actor on the ground.

Fright Dome actors were used for pranks, including a man pretending to be dead on the floor of a petrol station

Most of the tricks were recognisable as being the work of DM Pranks: the costumes, melee weapons and simulated murder

Matteo said that he has big plans for upcoming videos, but these might be altered depending on the production companies he chooses to work with

When she does she screams in panic and the three clowns arise from their positions and barricade her inside as one of them asks: 'May I help you?'

The pranksters, who carry melee weapons, close in on the terrified woman who backs away and runs into the corner of the shop while pleading for her life.

Other pranks in the clip include charging at a man in the hallway of the Circus Circus hotel and chasing after people in a car park.

Most of the tricks are recognisable as being the work of DM Pranks: the costumes, melee weapons and simulated murder.

Other pranks in the clip saw the clowns charging at a man in the hallway of the Circus Circus hotel

Matteo said that he captued some great reactions but has a few more that he is looking to use in another video

But two of the pranks featured in the video present the progression of the channel and a series of expensive props have been included to enhance the terror.

In one scene the clowns stop two men in an alleyway while inside a police car and ask them to get down on their knees before chasing them away.

And later an ambulance is used alongside a series of actors to convey a bizarre murder/recovery scene before the clown doctors spot a couple passing and decide to strike again.

Speaking about the video, Matteo said: 'These were the best reactions but I have a few more that I will probably use in another video.

In one scene from the video the clowns stop two men in an alleyway while inside a police car and ask them to get down on their knees

After the filming of his most recent Las Vegas prank, Matteo explained that he got together with the victims and had a good laugh

'The actors are the same clowns that are inside the Fright Dome, they are really professional and it was very easy getting good results with them.

'Other than that I set up the cameras and angles on my own, along with my cousin Bryan, who was a huge help.'

He also noted that he has big plans for upcoming videos, but these might be altered depending on the path he takes and the production companies he chooses to work with.

An ambulance is used alongside a series of actors to convey a bizarre murder/recovery scene

DM Pranks has more than 3.5 million YouTube subscribers, 410 million views and half a million Facebook fans

After the filming of his most recent Las Vegas prank, Matteo explained that he got together with the victims and had a good laugh.

'They watched their reaction on the camera and probably had more fun than the viewers. Usually the people pranked turn into my most hardcore fans.'