F1 faces calls to quit Saudi Arabia while prisoner’s family asks Hamilton to help

• Abdullah al-Howaiti arrested aged 14, sentenced to death at 17
• Human rights group Reprieve highlights protesters' executions

The human rights group Reprieve has demanded Formula One ends its association with Saudi Arabian sportswashing after the family of a teenager sentenced to death wrote to Lewis Hamilton pleading with him to speak out on their son's behalf before this weekend's race.

In documents sent from Abdullah al-Howaiti's prison cell and seen by the Guardian, he cites the torture and abuse he says he has suffered at the hands of the Saudi authorities as F1 once more prepares to race in the country which recently carried out 81 executions in a single day. In a report issued in January, a group of UN experts classified some of Saudi Arabia's violations of international law as potentially crimes against humanity" as the state continues to execute minors.