RNA - Son of Nabeel Rajab, Adam said that his father called from prison and told them that he will be transferred to hospital due to pain in his chest, Bahrain Mirror reported.
Adam Rajab did not provide more details on his fathers deteriorating health.
Denmark had expressed its serious concern by the information it received about the health deterioration of the prominent human rights defender Nabeel Rajab, who has been in prison since more than 2 months over posting tweets on his own Twitter account.
Earlier this month, Bahraini judicial system denied bail for prominent human rights activist Nabeel Rajab despite a new request to free him on health grounds.
The 51-year-old activist, who had been pardoned for health reasons last year, was rearrested in June and is on trial on charges of insulting a state institution and neighboring Saudi Arabia online.
Rajab has had recurring health problems and was briefly hospitalized late in June. But the court ordered that he remain in custody throughout the trial and set the next hearing for September 5.
Amnesty International has said Rajab could face up to 13 years if convicted and has denounced what it described as a "farcical trial."
The activist has been repeatedly detained for organizing protests and publishing tweets deemed insulting to Bahraini regime.
Home to the US Navy's Fifth Fleet, Bahrain has been rocked by unrest since security forces crushed peaceful protests in 2011 demanding a constitutional monarchy and an elected prime minister.
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