From the BBC:
Raja and his co-accused had watched videos of men blowing themselves up in Iraq and elsewhere – films where the suicide bomber often appears ecstatic in his final moments, edited to rousing music before being posted online.
They had dipped into the classic jihadi texts passed around on the internet, including an infamous call to arms urging men to “Join the Caravan” and become mujihadeen warriors for Afghanistan.
And Raja’s intention, according to the prosecution, was clear in the letter he left his parents.
“PPS if you want to keep my letter then cut from the dotted line, as these people (of UK) use everything against you.”
These people included his parents. Decent hardworking people, they called the police, fearing their son had been brainwashed by terrorists.
And if his parents are typical of any Indo-Pak first generation parents, they would have done more than merely call the police. I am sure he got slapped down to size by them.