Kids Company sent thousands of pounds to people living in Nigeria and Jamaica and gave money to a man who rented out rooms to crack dealers, according to devastating new material obtained by The Mail on Sunday.

The secret files held on some of those helped by Kids Company are likely to intensify the row over the financial crisis that engulfed Camila Batmanghelidjh’s charity earlier this month.

Documents sent to this newspaper by a Kids Company insider appear to show that ‘clients’ – Kids Company’s term for the teenagers and young adults it helped – were supported despite a life of criminality, sometimes into their 30s. And they continued to get help even after they left the country.

Questions: Camila Batmanghelidjh and the BBC's Alan Yentob could be asked to explain the charity's finances

The charity closed earlier this month amid claims of financial chaos and allegations that it helped only a fraction of the 36,000 ‘clients’ it claimed to benefit.

One file on a 23-year-old includes an email, sent to Ms Batmanghelidjh in March, that reveals the charity has funded him even though he is now living in Nigeria. Ms Batmanghelidjh is told he needs £900 to pay his rent and £90 for a Nigerian passport ‘so that he can apply for work [in Nigeria]’.

The file quotes a caseworker saying: ‘I will find out if we can do it by transfer rather than cash.’ It adds: ‘He says he wants a good job and the only way he can do this is if we fund his college placement and he receives an allowance while in education [in Nigeria].’

The caseworker admits accidentally sending the man double the allowance he was entitled to. The following week’s money was stopped as a result.

According to a handwritten note on the files, the individual was deported to Nigeria for ‘criminal activities’.

Another file, on a 26-year-old man, includes an ‘incident form’ that reports that he became abusive to staff in the kitchen of one of the charity’s ‘urban academies’ because being told to wait for food had made him feel like he was ‘back in prison’.

It says he lives in a ‘squat’ in which he rents several rooms ‘to people he describes as crack dealers and heroin and crack users’. His brother had ‘been part of a group of kids that tried to rob a shop at (fake) gunpoint and there is police action’ and he would ‘ask his brother to sign up to Kids Company’.

Ms Batmanghelidjh and Alan Yentob, the BBC executive who was chairman of the charity’s board of trustees for 18 years, face being called before MPs

Kids Company says the man cannot give up cannabis ‘because without it he will explode’. A handwritten note claims he sexually assaulted a girl on Kids Company premises and worked for the charity in return for cash in hand.

A third man helped by the charity is still having his rent paid and receiving an allowance at the age of 32 – because he refused to claim job seeker’s allowance.

Another file reveals that a 29-year-old ‘client’ who was personally dealt with by Ms Batmanghelidjh had been barred by social services from access to his children because of his ‘aggressive behaviour’ towards his ex-partner. He had also been jailed for theft. The Kids Company caseworker wrote: ‘Received a call from xxx, sounding as if he was under the influence of alcohol. He requested Kids Company pay his rent.’

The leaked documents suggest the individual was a ‘heroin addict and alcoholic’. A note says he received a total of £70,000 last year from Kids Company – and stole a further £10,000 from it.

The documents also show that Kids Company spent £396,082 on a project described as ‘Brain Correlates Of Childhood Maltreatment’.

It involved using brains scans to try to prove that being mistreated as a child can turn people violent.