Naomi Campbell's friend has said that she was having a 'really bad day' when she allegedly ended up clobbering her chauffeur, according to reports.

The supermodel's driver got it in the neck after failing to answer questions about the fidelity of her boyfriend, Vladimir Dorodin.

Naomi reportedly punched driver Miodrag Mejdina, 27, in the head with her fist from the backseat of her Cadillac Escalade.

As the car weaved through traffic in Manhattan's Midtown, the catwalk queen allegedly smashed Mejdina's face into the steering wheel, leaving him with a stonking bruise under his left eye.

The New York Post has reported that it was all because Mejdina, who has chauffeured her boyfriend, refused to dish the dirt on Russian Vlad.

And soon after, furious Naomi stepped out of the car and fled - sending cops on a wild goose chase after her on Tuesday.

But, one of her friends has said that she was simply having a "really bad day".

"Everyone knows Naomi has a temper on her. She was having a shocker of a day and the traffic was crawling," the Mirror quoted a source as saying.

"They had a spat and unfortunately it turned a little nasty. But it was nothing to do with Vlad - he was barely discussed.

"It seems incredibly unlikely that the US report is true, it is sure to be one big misunderstanding. The whole thing is ridiculous. Because it's Naomi involved, everyone is quick to judge. That the guy has dropped charges speaks volumes," added the pal.

An NYPD spokesman has confirmed that all charges against Naomi had been dropped.

A spokesman for the supermodel said: "There shouldn't be a rush to judge. Naomi will co-operate voluntarily and there is more to the story than meets the eye." (ANI)