Piers Morgan has again slammed Olly Murs after he claimed there was a police 'cover up' during the Black Friday terror false alarm.

The singer insisted shots were fired during the panic in central London that left 16 injured.

Murs was even backed by popstar Lily Allen, despite police today rubbishing the claims saying they 'found no evidence of any gunfire' following an investigation.

Mr Morgan said on Twitter: 'Oh, stick a cork in it.

Good Morning Britain presenter Piers Morgan (pictured) accused him of being irresponsible with his Tweet

'For goodness sake... NOBODY. FIRED. A. GUN.'

He later referenced Lily Allen's tweet in which she said 'I believe Olly.'

Piers replied: 'Of course you do.'

It is the second time Mr Morgan has become embroiled in a row with Murs over his tweets.

At the time of the incident he told him to 'Stop tweeting mate. Nothing happened' and said he had 'stirred needless panic.'

Piers' tweets where he laid into Murs for claiming in an interview that shots were fired during the Black Friday terror false alarm

Lily Allen (pictured during a performance in New York came out in defence of Olly's claims this morning

Lily Allen's tweet this morning in which she backed Olly Murs' claim that shots were fired during the incident

Olly was mocked after tweeting in a panic from London's Selfridges to say guns were going off On November 24 last year.

It is understood that the rumours began after a scuffle on the Tube sparked a case of 'chinese whispers'.

In a statement today British Transport Police said: 'This caused a significant level of panic which resulted in numerous calls from members of the public reporting gunfire.

'Officers responded in line with our procedures of a terrorist incident, this included armed officers from British Transport Police and the Metropolitan Police.

'A full and methodical search of the station and Oxford Street was conducted by our specially trained firearms officers. During the search, officers did not find any evidence of gunfire at the station.

Reports of an alleged terror attack saw Black Friday shoppers trapped inside stores while armed police patrolled Oxford Street (pictured) outside

'During the station evacuation, one woman is believed to have sustained a minor injury.

'We understand that incidents like this cause panic and concern.'

But the singer insisted told The Sun in an interview: 'Something happened that day. Whether it was covered up, I don't know.'

And Lily Allen tweeted today: 'I believe Olly.'

He tweeted to tell his 8.4million followers gun shots were being fired half a mile away at Selfridges department store near Bond Street Station

The ridiculed star hinted at a cover-up over the terror false alarm by saying: 'It's all a bit murky.'

The singer, 33, was caught up in the confusion when shoppers ran for their lives outside Oxford Circus Tube station.

Reports of an alleged terror attack saw Black Friday shoppers trapped inside stores while armed police patrolled the scene on one of the busiest shopping nights of the year.

Mr Murs was inside Selfridges department store, nearly half a mile away, when the chaos unfolded.

He tweeted to his 8.4million followers: 'F*** everyone get out of Selfridges now, gun shots! I'm inside.'

But just over an hour later British Transport Police declared there was no evidence of a terror attack.

He has faced repeated criticism for his tweet, after 16 people were injured in the stampede.

The 33-year-old was buying a massage chair as a Christmas present when he claims store managers announced there was a suspicious incident unfolding.

He says an employee told him and 20 others that were crammed into a backroom that they saw 'a man in the beauty aisle with a gun'.

The Voice judge says he did not hear the gunshots himself, but decided to tweet about it when he heard the employee's report.

He added: 'I ran for my life thinking 'Someone's upstairs shooting.' The noise of people screaming, it was terrifying.'

Police eventually said two men were involved in an altercation, which could have caused the panic.

Witnesses said the two men 'bumped' into each other before 'several punches' were thrown on the westbound platform at Oxford Circus.

But despite Mr Murs being the other end of the street near Bond Street Tube, he is adamant something more happened.

He also hit out at the 'unfair' response to his tweet, which is still ridiculed on social media.

But despite the chaos (pictured), just over an hour later British Transport Police declared there was no evidence of a terror attack

Shoppers ran for their lives after reports of gun shots were circulated on social media

Armed police were scrambled to Oxford Circus on one of the busiest shopping days of the year

Mr Murs has faced repeated criticism for his tweet, after 16 people were injured in the stampede (police pictured)

Shoppers are pictured trapped inside an Oxford Street store on November 24 last year

At the time of the incident, Mr Morgan became embroiled in a row with Mr Murs, when he wrote: 'Stop tweeting mate. Nothing happened.'

The singer responded: 'If you was there you'd have understood mate.'

But Mr Morgan insisted: 'When you have millions of followers be very careful what you tweet.

'There were no shots, in fact nothing happened at all. So you stirred extra needless panic.'

Mr Murs hit back again: 'Your comments are unfair. It's easy to say now it was nothing but in a state of shock and panic I was trying to make people aware.'

But Mr Morgan replied: 'Leave it to the police next time. You could have put people in more danger.'

While Mr Murs admits you 'have to be careful what you say' on Twitter, he stands by his actions.

He told the newspaper he still gets unpleasant comments about that day, but has also been humbled by other witnesses' support.

In a statement after the incident was stood down, police said: '[Officers] would now like to speak to these two people in the CCTV images, who they believe may have information about the incident and the circumstances around the incident.

'They would also like to speak to anyone who was at the station or in the area at the time and saw or heard anything that would have caused mass evacuation.'

Chief Superintendent Martin Fry added: 'Thank you to everyone for bearing with us this evening and also to colleagues from all the emergency services who helped carry out a swift response.

'Our officers, alongside those from the MPS, reacted quickly and responded professionally in line with our well prepared plans.

'I know incidents like these can cause concern, but our officers are highly visible around the network and across the country so if you ever need us please call us on 0800 40 50 40 or text 61016.'