The headteacher of Langdon Park School has said that "out of all his students", Amjol Amol was the "least likely" to be involved in violence. Chris Dunne added that the teenager had been working in Northern Ireland to promote peace in local communities.
A post-mortem is due to take place tomorrow.
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Collins hid the device, two sim cards and two memory sticks inside a crutch while on remand in September.
The deal puts an end to the previous system where drivers moving to another bus company would get lower pay.
Simon only noticed it had gone missing in the new year when he went to change his Rudolph reindeer eye he had been wearing over Christmas.