Yazidi activist Nadia Murad, a survivor of "Islamic State of Iraq and Syria" (ISIS) sex slavery, implored the global community to help free hundreds of women and girls still held by the group in her Nobel acceptance speech Monday (December 10th), AFP reported.

"The protection of the Yazidis and all vulnerable communities around the world is the responsibility of the international community," Murad told the ceremony in Oslo.

The 25-year-old shares the Nobel Peace Prize with Congolese doctor Denis Mukwege, who has spent more than two decades treating injuries inflicted on women in the Democratic Republic of Congo's war-torn east.

Nobel committee chairwoman Berit Reiss-Andersen said the pair were "two of the strongest voices in the world today".

"The fight for justice unites them, despite their very different backgrounds," she said Monday.

Murad wept during Reiss-Andersen's description of the suffering of her people.

Captured in 2014, Murad suffered forced marriage, beatings and gang-rape before she was able to escape.

In her Nobel acceptance address Monday, Murad said thousands of women and girls from her community had been kidnapped, raped and traded "in the 21st century, in the age of globalization and human rights".

The fate of some 3,000 women and girls is still unknown.

"Young girls at the prime of life are sold, bought, held captive and raped every day. It is inconceivable that the conscience of the leaders of 195 countries around the world is not mobilised to liberate these girls," she said.