'Break into someone's house and get your first taste of beheading':

• Boy was 14 when he encouraged Sevdet Besim, 18, to murder an officer
• Two shared thousands of enthusiastic messages online and praised ISIS 
• Youngster even told Besim that he should get his 'first taste of beheading'
• Lived in £200,000 four-bedroom house in middle-class area of Blackburn
• The boy was reportedly known to police before offence was committed
• Besim is currently on remand in Australia charged with conspiring to prepare, or plan for, a terror attack. 

Britain’s youngest terrorist sent messages urging a teenager in Australia to 'break into someone's house and get your first taste of beheading', a court heard today.

The 15-year-old boy from Blackburn was just 14 when he encouraged Sevdet Besim, 18, to murder an officer, with the two sharing thousands of enthusiastic messages online that also praised ISIS.

He today admitted inciting Besim to behead, run over or shoot a police officer in a Lee Rigby-style attack during an Anzac Day parade in Australia. - although no attack actually went ahead.

+4

Defendant: The 15-year-old boy (centre; sketched in an earlier court appearance) encouraged a teenager to murder an officer, with the two sharing thousands of enthusiastic messages online that also praised ISIS

He is believed to have communicated with Besim over a secure encryption app known as Telegram. Besim was arrested in Australia after Greater Manchester Police discovered their contact.

Wearing a grey shirt and tie, the youngster - who cannot be named for legal reasons - spoke only to enter his plea at the Old Bailey this morning via video link from Manchester Crown Court.

'ARE YOU WILLING FOR A BULLET TO GO THROUGH YOU?'

Communications allegedly revealed Besim was planning to target police and intelligence officers with firearms and ‘a massive machete’.

The boy urged him on and suggested videotaping the attack and sending it to an IS recruiter.

He wrote: ‘You are a lone wolf, a wolf that begs Allah for forgiveness a wolf that doesn't fear blame of the blamers. I'm (sic) I right?’

Besim allegedly replied: ‘Pretty much.’

The boy also instructed Besim to ‘start dressing like a Kuffar’, and asked if he was ‘willing for a bullet to go through you’.

During another conversation days later, the British boy told Besim not to underestimate the ‘difficulty of beheading a person’ and advised him: ‘U gotta be a lion especially that ur doing it in public.’ 

He lived in a four-bedroom house worth about £200,000 in a middle-class area of Blackburn, and was reportedly known to police before the offence was committed.

Paul Greaney QC, prosecuting, told the court: 'This charge represents conduct over a ten-day period in March this year, of inciting an Australian-based man to commit an act of terrorism abroad, namely murder a police officer during a parade to commemorate Anzac Day.

'The evidence of the plot derives from literally thousands of instant messages between the defendant and Sevdet Besim, recovered from the defendant's mobile phone. 

The messages revealed the intention of the plot and the target, along with motivation summarised as support for ISIS and enthusiasm for the attack.’

A trial has been expected to take place next month, but the boy entered a guilty plea for the first of the two charges he was facing.

Mr Greaney told the court that the second count, of encouraging Melbourne-based Besim to carry out another decapitation on a 'loner' in their own home, would be deleted.

He said: ‘The defendant send Sevdet Besim a message saying: "Suggest you break into someone's house and get your first taste of beheading".

Y USED ENCRYPTION APP POPULAR WITH EXTREMISTS 

The Daily Mail revealed in May how encrypted mobile phone apps are at the heart of attempts by Islamic State recruiters to target vulnerable teenagers in Britain and prime them for a life of jihad.

The apps – which are used by millions of teenagers on smartphones and tablets – have been developed by Left-wing extremists so users can send messages without them being read by authorities. 

The Mail investigation named apps such as Kik, surespot, Wickr and Telegram.

Telegram, which is currently not making any money due to costs, was created just 18 months ago. Some 5billion messages are now sent by the app daily and it is Russia’s largest social network.

'Sevdet Besim said this seemed a little risky.'

Mr Greaney told the court this plot would be 'part and parcel' of the allegations that the boy has now admitted. 

Mr Justice Saunders ordered reports before sentencing, saying: 'I want to know if there is any indoctrination or belief in this case.

'I want some assessment of that, why and how they have occurred, and what measures can be taken in order to reverse that process.'

He said the sentencing process would be 'extremely difficult' when it takes place on September 3.

The boy was remanded in custody at a youth detention centre until the sentencing hearing, which will take place in Manchester.

Mr Justice Saunders said he will also consider lifting an order protecting the boy's identity, given the seriousness of the case.

The boy admitted inciting terrorism overseas, contrary to section 59 of the Terrorism Act 2000. 

Besim is currently on remand in Australia charged with conspiring to prepare, or plan for, a terror attack.

He will return to Melbourne Magistrates Court in August.