An Egyptian-Canadian journalist held in a Cairo prison is 鈥渆xtremely frustrated鈥 and worried about his fate, his brother said Thursday in an exclusive interview with .

Sherif Fahmy said his brother, Mohamed Fahmy, doesn鈥檛 understand why he is being held in jail with 鈥渉igh-profile members鈥 of the Muslim Brotherhood, which has been labelled a terrorist organization by the Egyptian government.

鈥淲hen we met him yesterday, he was extremely frustrated and wanted to know how (this) would all resolve and when,鈥 Sherif Fahmy said from Kuwait.

鈥淎t the end, he鈥檚 just a journalist.鈥

Mohamed Fahmy was among 20 employees of broadcaster Al Jazeera who were charged with terrorism-related offences in Egypt.

According to Fahmy鈥檚 family, he has been charged with using illegal equipment, broadcasting false news that endangered national security and being a member of the Muslim Brotherhood.

Fahmy, Al Jazeera English鈥檚 acting bureau chief in Cairo, was taken into custody on Dec. 29 along with two colleagues.

Egyptian authorities have accused Al Jazeera of being biased towards former president Mohammed Morsi, who was ousted by the military last summer. The prosecutors have accused the Al Jazeera journalists in Egypt of 鈥渕anipulating pictures鈥 to 鈥済ive the impression to the outside world that there is a civil war that threatens to bring down the state.鈥

Although Fahmy is growing increasingly upset and agitated in prison, he does not appear to be physically hurt, his brother said.

He said the fact that Fahmy has dual Canadian-Egyptian citizenship seems to be 鈥渓imiting the actions of the Canadian government,鈥 but added that there is now 鈥渇ast action鈥 on the case from the Canadian side.

He said Fahmy has been questioned about his background, where he studied, where he worked and what type of devices he鈥檚 used in his work.

The family is 鈥渆xtremely worried鈥 about what will happen next, Sherif Fahmy said.

Fahmy's family moved to Canada in 1991. He lived in Montreal and Vancouver before moving abroad for work.

With files from The Canadian Press