A Bosnian Serb suspeced of carrying out crimes against humanity is to be extradited to Sarajevo to face charges after a court in France ruled in favour of hte extradition.

The man, Radomir Susjnar, was arrested in Paris in April 2014. He was a member of a Bosnian Serb paramilitary group that was responsible for the murder of 59 Bosnian Muslims in 1992 in Visegrad and has been accused of incarcerating the victims inside a house before setting it alight.

Nigeria's military secretly buried more than 300 Shia Muslims in a mass grave, according to officials, prompting Amnesty International to call for an investigation.

Officials in the state of Kaduna told an inquiry that soldiers took bodies from a morgue to a bush site following a crackdown on a pro-Iranian sect, the BBC reports.

The raid in December followed accusations the sect had tried to assassinate the army chief, which it denies.

South Sudanese rebel leader Riek Machar has returned to his country as part of a peace deal struck with President Salva Kiir's government.

His spokesman told the BBC that Mr Machar was now at rebel military headquarters in the eastern town of Pagak. the first time he has entere the country in two years.

He is expected in the capital Juba next week to resume the post of vice-president as part of the deal finalised last year.

Officials at UK immigration have been hacking into the phones of asylum seekers over the past three years, The Independent reported this week.

The officials have been doing through an amendment to the 1997 Police Act, which now allows them to conduct "property interference, including interference with equipment." Specifically, this reportedly allows the installation of listening devices into the homes or cars of refugees, as well as at detention centres, the paper reported.

The UN Secretary General Ban Ki Moon, marking International Day of Reflection on the Genocide in Rwanda, on Tuesday stressed the need to prevent genocide by fighting "genocide ideology".

“It is essential that Governments, the judiciary and civil society stand firm against hate speech and those who incite division and violence,” Mr Ban said whilst addressing a remembrance event at the UN General Assembly.

A new political party was formed on Sunday in Hong Kong, pledging to push for an end to China's encroachment on the region's autonomy and to advocate for self-determination.

The party, Demosisto, is formed by the student activists who led the Occupy movement of 2014, referred to as the Umbrella movement.

In its manifesto the party pledged to hold a referendum in ten years allowing residents to determine their own fate from 2047.

Whilst the party's secretary, Joshua Wong, did not himself back independence, he stressed that independence should be listed as an option during the referendum.

Events took place across the world this week to mark 22 years since the beginning of the Rwandan genocide, which lead to the deaths of over 800,000 Tutsis and moderate Hutus.

Rwandan President Paul Kagame lit the Flame of Remembrance at the Kigali Memorial Centre this week, to mark 100 days of mourning for the victims of the genocide. See pictures from the ceremony here.

Also see accounts from genocide survivors, compiled by the United Nations, here.

US President Barack Obama released a statement to mark the occasion, stating,

“We honor not just the victims but also those who risked their lives to save others as well as the survivors who carry the memories of these atrocities. On this solemn day, we remind ourselves of our common humanity and shared commitment to protecting civilians and ensuring that mass atrocities of this magnitude never happen again.”

Horrific billboard in Boston's North End, denying the Armenian Genocide. @marty_walsh, do something. @universalhub pic.twitter.com/oi3old3SD8 — Elizabeth Weinbloom (@LizWeinbl) April 6, 2016

A controversial billboard in Boston, USA has been pulled down after complaints that it was denying the Armenian genocide on Wednesday.

The billboard, which had shown three hands - one bearing the Turkish flag making the peace sign, surrounded by two hands with Russian and Armenian flags with crossed fingers under the heading “Truth = Peace” - was pulled after less than 24 hours. It had also said it was “proudly paid for by the Turkic Platform, Istanbul”.

A spokesperson for the billboard owners said “the ad was placed there in error”.

Armenian community leaders criticised the billboard, with the regional director of the Anti-Defamation League Robert Trestan stating, “This billboard denying the Armenian Genocide is no different and just as offensive as one denying the Holocaust”.