Man, 23, suspected of shooting dead police sergeant Matt Ratana was ‘good with weapons’ according to unearthed school yearbook – as school friends say he was ‘brilliant’ at maths and could have gone to Oxbridge

Louis De Zoysa, 23, is suspected of shooting dead Sergeant Matiu Ratana, 54
Yearbook showed him in school uniform with friend saying he was ‘very clever’
Other students who attended with him said he could have gone to Oxbridge