Saudi Arabia could be on course to put more than 100 people to death in the first six months of this year after a dramatic surge in executions.

The death of a Nigerian man convicted of murdering a police officer on Sunday brought the total for 2016 to at least 95 people and humanitarian organisations fear the rate of killings will continue.

“Executions in Saudi Arabia have been surging dramatically for two years now and this appalling trend shows no sign of slowing,” said James Lynch, deputy Middle East and North Africa director at Amnesty International.

“The steep increase in executions is even more appalling given the pervasive flaws in Saudi Arabia’s justice system, which mean that it is entirely routine for people to be sentenced to death after grossly unfair trials.

Protests follow execution

“The Saudi Arabian authorities should end their reliance on this cruel and inhuman form of punishment and establish an official moratorium on executions immediately.”

The number of people executed is already higher than at the same point last year, when 158 people were put to death. It was the highest recorded figure in the country since 1995.

Most were beheaded using swords or killed by firing squad, with the bodies sometimes displayed in public after the executions.

Murder and drug trafficking cases account for the majority of executions, although Saudi law also allows for the death penalty for “crimes” including adultery, apostasy, blasphemy, sodomy and sorcery.

A prominent Shia cleric, Sheikh Nimr al-Nimr, was among 47 people killed in a single day in January on “terrorism” charges.

Juveniles on death row in Saudi Arabia Show all 8 1 /8 Juveniles on death row in Saudi Arabia Juveniles on death row in Saudi Arabia Abdullah al-Zaher Abdullah al-Zaher was arrested at the age of 15 for attending a protest and he is was the youngest in a group of juvenile offenders put on death row Juveniles on death row in Saudi Arabia Abdullah al-Zaher Previously held alongside fellow juvenile offender Ali al-Nimr, whose case sparked outrage around the world, Abdullah has now been moved to solitary confinement at a new facility and could be beheaded at any moment Juveniles on death row in Saudi Arabia Abdullah al-Zaher His family and lawyers believe he was forced to sign a document without knowing its contents, and which later was used as a “confession” in the closed trial against him Juveniles on death row in Saudi Arabia Ali Mohammed al-Nimr Ali Mohammed al-Nimr faces imminent beheading and crucifixion for crimes he reportedly committed as a child Juveniles on death row in Saudi Arabia Ali Mohammed al-Nimr The UN has issued an urgent call for Saudi Arabia to halt his execution but a Saudi court has upheld the sentence of Ali Mohammed al-Nimr, the son of a prominent government dissident, despite growing and high-level international condemnation Juveniles on death row in Saudi Arabia Ali Mohammed al-Nimr Mr al-Nimr, who was arrested in 2012 for his participation in Arab Spring protests when he was just 16 or 17 years old, could now be put to death at any time Juveniles on death row in Saudi Arabia Dawood al-Marhoon Dawood al-Marhoon was 17 year old when he was arrested for participating in an anti-government protest Juveniles on death row in Saudi Arabia Dawood al-Marhoon After refusing to spy on his fellow protesters, he was tortured and forced to sign a blank document that would later contain his ‘confession’. At Dawood’s trial, the prosecution requested death by crucifixion while refusing him a lawyer

His nephew, Ali al-Nimr - who was arrested along with two others juveniles is currently on death row.

Now 21, Amnesty says he was sentenced to death based on “confessions” allegedly extracted through torture, in a violation of international human rights standards.

He was arrested aged 17 after taking part in anti-government protests and tried by a counter-terrorism court for a series of offences such as attacking security forces and committing armed robbery.

Two other young men, Abdullah al-Zaher and Dawood al-Marhoon were sentenced to death a few months afterwards, on a list of similar offences, and Amnesty International is among the groups calling for the convictions to be quashed.

The British Government said it has “regularly raised” but that under Saudi law they were considered to have been adult at the time of their alleged crimes.

The British Government has been criticised for retaining close relations with Saudi Arabia (Getty)

Reprieve, a legal charity, said juvenile offenders were also among those executed in January, including a man thought to be 14 at the time of his arrest following demonstrations.

The organisation said that if maintained, the current pace could see more than 320 prisoners killed by the end of this year.

Saudi Arabia was among the “human rights priority countries” highlighted by the Foreign and Commonwealth Office in a recent report, although the British Government has been criticised for its close relationship and lucrative trade deals with the state.

The report said that as the principle of capital punishment is enshrined in Saudi Arabia’s Sharia law, abolition is unlikely in the near future, and that 2015’s rise in executions was partly due to long-running legal cases being concluded.