Christians have been left outraged by the death of a young woman in Eritrea, allegedly tortured to death in a military facility for refusing to renounce her faith in Jesus Christ, Open Doors has reported.

Migsti Haile, 33, died 5 September, at the Weaa Military Training Centre, and is the fourth Christian known to have been killed this way in the past year.

Open Doors, a Christian persecution and human rights watchdog, said Haile was tortured for refusing to "sign a letter recanting her faith".

It is believed she spent 18 months in prison "under severe pressure" since she and nine other single Christian women were arrested at a church gathering in Keren.

The latest news of persecution will further increase international pressure for the Eritrean Government to take action to guarantee religious freedom.

At least 2,000, mostly Christian evangelicals, are detained in Eritrean prisons, police stations, military camps and other facilities, including even shipping containers, according to a number of human rights groups, however, the Eritrean Government has denied any such abuses.

The Director of the Office of the Eritrean President, Yemane Gebremeskel, said recently that reports of mass arrests are "distorted and exaggerated".

Open Doors expressed grave concerns that more prisoners, including priests and pastors, would be killed by the same method of torture.

The organisation reported that the prisoners "remain locked up and [are] subjected to severe torture for their religious beliefs in the nation's jails, police stations and military camps. All have been denied legal counsel or trial, with no written charges filed against them".

Open Doors USA President Carl Moeller has said: "We need to keep up our prayer vigil for the Christians in Eritrea. Eritrea is a small country in Africa, but that doesn't mean the persecution is less intense than in larger countries."