Harrison was last seen on Auguist 12.
Police appeal for information after a young man was reported missing on August 12 in South East London.
Harrison O'Donoghue, 20 was last seen at 03:00pm in Charlton.
Police are asking members of the public to dial 999 if they spot O'Donoghue quoting CAD 5310/12AUG.
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