LONDON — One of two inmates who were mistakenly released early from a London prison surrendered Thursday after waving to reporters and smoking a cigarette on the steps of the Victorian-era lockup.

Billy Smith, 35, turned himself in to HMP Wandsworth three days after he was released in the latest administrative blunder to focus attention on an overcrowded and overwhelmed prison system that has become a political liability for the Labour government after being a thorn in the side of their Conservative predecessors.

Prison chiefs were summoned to a meeting Thursday to discuss the errors and efforts were being made to update a system that still uses paper prison records, Justice minister Alex Davies-Jones said.

Smith, 35, was accidentally freed Monday — the same day he was sentenced to near

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