Issawi was initially arrested in 2002, and in 2004 sentenced to 26 years in prison.

BBC: Clashes over hunger-striking Palestinian prisoners

Mr Fares says that he remains "very worried" about Samer Issawi and Ayman Sharawna.

BBC: Two Palestinians held in Israeli jail end hunger strike

Eifan al-Issawi was one of the main key founders of a so-called Awakening Council in Fallujah.

BBC: Iraq Sunni MP killed by suicide bomber

The Israel Prison Service (IPS) says Issawi has been on hunger strike, on and off, since September 2012.

BBC: Clashes over hunger-striking Palestinian prisoners

Two others, Samer Issawi and Ayman Sharawna, are still on hunger strike and are being observed in hospital.

BBC: Two Palestinians held in Israeli jail end hunger strike

Mr Sharawna and Mr Issawi were both later re-arrested by the Israeli authorities for allegedly violating the terms of their release.

BBC: Protest in West Bank for Palestinian hunger strikers

On Thursday, Issawi was convicted of breaching his release conditions by travelling from his home in East Jerusalem to the West Bank, his lawyer said.

BBC: Clashes over hunger-striking Palestinian prisoners

This prompted Mr Issawi to begin his hunger strike in August, but the BBC understands that at points he has broken off his protest for short periods.

BBC: Two Palestinians held in Israeli jail end hunger strike

"The moment he stepped out of the car to check out this road between Fallujah and Amiriyah, at this moment, there was a man, " Sohaib Haqi, Eifan al-Issawi aide, told the AFP news agency.

BBC: Iraq Sunni MP killed by suicide bomber

Mr Issawi launched a hunger strike in August, but the the BBC understands that at points during the 200 odd days he has broken off his hunger strike for short periods only to resume it again.

BBC: Protest in West Bank for Palestinian hunger strikers