TUNIS (Reuters) - A Tunisian military court found a former Guantanamo Bay prisoner guilty of belonging to a terrorist group on Wednesday and sentenced him to seven years in prison, a judiciary source said.

The U.S. government had freed and repatriated Tunisian national Abdullah Haji last June after spending five years in the U.S. detention camp.

The 51-year-old man, who pleaded not guilty, was convicted of "belonging to a terrorist group operating outside the country", the source added.

Another Tunisian, who also spent five years at Guantanamo before being deported to Tunisia last June, was earlier jailed for three years at a separate trial.

Human Rights Watch says 10 Tunisian detainees are still being held at Guantanamo.