Bahrain Mirror: Bahrain has executed three people convicted in two separate cases, one a case of "terrorism" and killing a police officer, and the second related to the killing of a mosque imam.

Human rights groups had been warning against the execution of two men, Ali Mohamed Hakeem Al-Arab and Ahmad Isa Ahmed Isa Al-Malali.

A last-minute appeal to stop their imminent execution was also issued by the UN special rapporteur on extrajudicial killings, Agnès Callamard.

Callamard said in a statement the men were allegedly tortured, prevented from attending their trial and sentenced to death in absentia.

Amnesty International Middle East research director, Lynn Maalouf, also warned the executions were "an utterly shameful show of contempt for human rights".

"The death penalty is an abhorrent assault on the right to life and the utmost cruel, inhuman and degrading punishment. Its use is appalling in all circumstances, but it is all the more shocking when it is imposed after an unfair trial in which the defendants were tortured to ‘confess'," she said.

Bahrain has been gripped by bouts of unrest since 2011, when authorities cracked down on Shia-led protests demanding political reform. The UK advises Bahrain on training its police and independent complaints procedures.

Arabic Version