Greta Thunberg’s alleged claims that she sat for hours on hard surfaces in a bedbug-infested Israeli jail while denied adequate food and water have been blasted by Israel’s Foreign Ministry as “brazen lies.”

According to correspondence from the Swedish Foreign Ministry, seen by The Guardian, Thunberg told officials she developed rashes possibly caused by bedbugs. 

The activist was also said to have complained of dehydration.

A letter shared with Thunberg’s parents also reportedly said she described “harsh and exhausting” treatment after she was detained by Israeli forces during her Gaza-bound Global Sumud Flotilla aid expedition.

Israel’s National Security Minister Itamar Ben-Gvir described the flotilla participants as “supporters of terrorism,” saying he was “proud they experienced the same conditions as terrorist detainees.”

Thunberg, 22, was among roughly 450 activists from more than a dozen countries detained after the Israeli navy intercepted the 42-boat Global Sumud Flotilla on October 1. 

Climate activist Greta Thunberg with other activists from a human rights organization met with journalists in Catania, Italy ahead of their departure for the Mideast.  (AP)

The convoy, which departed from Turkey a day earlier, sought to breach Israel’s maritime blockade of Gaza and deliver symbolic humanitarian aid.

Other activists, such as Turkish journalist and flotilla participant Ersin Çelik, told Anadolu Agency that guards “dragged little Greta by her hair, beat her, and forced her to kiss the Israeli flag.”

Fox News Digital reached out to the Swedish Foreign Ministry and the Israeli Foreign Ministry for comment.