Navalny told his lawyer he thought he was being poisoned in prison months before his sudden death

• Alexey Navalny told his lawyer he suspected he was being poisoned in prison months before his death.
• The Russian opposition leader died suddenly in a Russian penal colony in February.
• Western leaders, including President Joe Biden, have accused Putin of being behind Navalny's death.

Alexey Navalny, the late Russian opposition leader, said he thought he was being poisoned months before he died suddenly in prison, his former lawyer has claimed.