According to a close ally, Alexei Navalny, the most prominent opposition politician in Russia, has been suffering from severe stomach pain in jail, which could be the result of slow-acting poison.

Ruslan Shaveddinov stated that an ambulance was summoned last week to the maximum-security IK-6 penal colony located in Melekhovo, roughly 155 miles (250km) east of Moscow, where Navalny is currently being detained.

In a phone interview with The Guardian, Shaveddinov stated, “His condition is critical, and we are all very worried, the. Guardian reported.

If an ambulance was called, the situation must have been very serious.” He went on to say that prison authorities declined to transfer Navalny to a hospital.

Navalny’s lawyers serve as his means of communication with the external world.

Currently, Navalny is serving a sentence of 11 and a half years for various charges, including fraud and contempt of court, that human rights organizations believe were fabricated to silence him.

Written by staff