18-year-old Hassan Sentamu has been sentenced to at least 23 years for murdering 15-year-old Elianne Andam in Croydon.
Paying tribute to the late teenager following the sentencing, her cousin Gideon said: "She was a light in all of our lives.
Our only hope now is that real change will come from this tragedy - knife crime is taking too many lives." Report by Kennedyl.
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