The 17-year-old boy was born in Cardiff after his family moved from the African nation - then moved north to Merseyside about ten years ago.
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The teenager held over the Southport stabbings was an 'introvert' who lived in a nearby village with his 'nice family', who had moved to the UK from Rwanda.''
''As a youngster he trained in karate with his father doing classes with Sensei Chico Mbakwe, 79, at St Cadoc's church hall in Llanrumney - a suburb of the Welsh capital.''
''Mr Mbakwe said the boy was a 'typical, normal five year old' who continued to train at the dojo even after his father fell out with club leaders.
Mr Mbakwe said: 'He was a good child, a normal child, who had lots of energy.
'I remember him because he continued to train with us for around three months after his father left for another dojo I own.'
Mr Mbakwe said the family were nice but the boy's father fell out with him after he failed him for his black belt grading.''
'The youngest child was very quiet, an introvert
He was quite clingy to his mum while his older brother was more boisterous and would stick his tongue out at you.''
'They must have had lots of money, it wouldn't have been a cheap rent.
'This is a lovely estate in a nice part of Cardiff.'