The two criminals, who cannot be named because of their age, were 12 years old when they attacked Shawn Seesahai with a machete on Stowlawn playing fields in Bilston last november

They were sentenced in September to at least eight years and six months in prison for killing the “humble and hard-working” 19-year-old who was visiting the area when he was struck with the machete.

The terms handed down to Mr Seesahai’s school killers could be reviewed after they were branded “too lenient” by his devastated parents and members of the public, according to reports.

Mr Seesahai had come to the UK from his native Anguilla with his united family for cataract treatment a few months earlier.

The two boysthey were Britain’s youngest convicted criminals since James Bulger’s killers, now aged 13 and just 12 when they attacked Mr Seesahai and his friend, who managed to escape. A court heard that one of the defendants posed, wearing a mask, with the murder weapon for a picture hours before the killing and attacked Mr Seesahai. without provocation next to a park bench.