A teenage drug dealer hid £4,000 of heroin and crack cocaine under a mattress in a hotel bedroom.
Robert Lingham was caught with the stash at a Travelodge in Fiddlers Ferry Road, Widnes in the early hours of August 3 last year.
Police also discovered £575 in cash, a small amount of cannabis and two mobile phones, which later revealed evidence of drug dealing.
But the then 18-year-old, from Runcorn, remained tight-lipped during a police interview and was released on bail, pending further investigations.
Just over a month later, officers raided another hotel room the teen was staying in, this time at the Days Inn, in Liverpool city centre, on September 11.
They seized 54g of crack cocaine, which was said by police to be worth "thousands of pounds", and a small bag of cannabis.
On October 11 last year, he admitted possessing a Class A drug with intent to supply and possessing a Class B drug, in relation to the September 11 find.
However, the judge sitting at Liverpool Crown Court was not made aware of the outstanding investigation relating to the August 3 haul.
Lingham pleaded guilty on the basis he was only minding the crack for social acquaintances, which was accepted by prosecutors and the judge.
Judge Rachel Smith then sentenced Lingham to two years and seven months in a young offenders institution.
It wasn't until December last year – two months after he was locked up – that police first put the outstanding case, now with forensic evidence and phone data, before the Crown Prosecution Service.
Lingham was charged in January, appeared before magistrates in February, and earlier this month admitted two counts of possessing Class A drugs with intent to supply, and possessing cannabis.
He appeared in court today to be sentenced over the new matters, via video link from HMP Altcourse.
Paul Blasbery, prosecuting, said the 2.10am Travelodge raid resulted in officers seizing a bag "located between the bedframe and the mattress".
In total there was 17.3g of crack, equating to 82 wraps, with an estimated street value of £1,640, and 26.2g of heroin, equating to 118 wraps, worth £2,360.
Lingham, now 19, has 14 convictions for 28 offences, dating back to 2015, including possessing drugs.
Carmel Wilde, defending, said it would have been preferable if he had been sentenced for all the offences at the same time, but conceded the court was not made aware of the outstanding investigation in October.
She said it was a "very sad case" as Lingham had "significant vulnerabilities" and "immaturity", raised by social workers and the Probation Service.
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Ms Wilde said: "It's evident through the reports from probation staff, who have dealt with him over a number of years, that they had significant concerns he had been associating with adults and been exploited by others who were more criminally sophisticated, and preyed upon."
The lawyer said he had a "chaotic" lifestyle, spent time in care and was "often passed from pillar to post".
She said Lingham endured "significant childhood trauma" and his mum suffered domestic violence.
Ms Wilde added: "He had a troubled and disturbing upbringing due to the trauma he witnessed as a child."
She said his mum was still supportive of him, but "unfortunately she has to move to an undisclosed location".
The barrister said Lingham's "explosive behaviour", traits associated with the autistic spectrum, mental health problems and suicide attempts were all said to be linked to his past.
She said: "The author of the pre-sentence report seems to attribute a lot of the defendant's behaviour to head injuries as a child, which have been untreated, and is convinced that may have something to do with his reckless behaviour."
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Judge Smith said the basis of plea Lingham advanced in October that he was only minding the drugs at the Days Inn may still be correct, but if the court had been aware of the Travelodge matters, this claim may have been investigated.
The judge said she had to consider what the sentence would have been if she had sentenced Lingham for all of the offences in October and concluded it would have been three years, rather than two years and seven months.
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As a result Judge Smith jailed him for a further five months, consecutive to his existing sentence.
This means in effect he will spend an extra two and half months behind bars.