On 23 January 2004, as 22-year-old student Wasif Hassan Abdulrab Matar went swimming on the Gold Mohur Coast in the south of Yemen, he was arrested by members of the Yemeni Republican Guards conducting a naval exercise and taken to an unknown location. As he has been missing since, on 27 November 2015, Alkarama sent a communication to the United Nations Working Group on Enforced Disappearances (WGEID), hoping that this human rights mechanism could help shed light on Wasif's fate and whereabouts.

On 10 November 2015, activists Walid Ali Omar Al Kathiri and Abdullah Karash were released by the Houthi-Saleh coalition from the Political Security Prison. Walid Ali Omar Al Kathiri and Abdullah Karash were detained incommunicado since their arrest together with 27 other activists on 12 October 2015 for organising a peaceful march to the besieged city of Taiz. Prior to their release, Alkarama had sent an urgent appeal to the United Nations Working Group on Arbitrary Detention (WGAD) calling for their discharge.

On 13 November 2015, Alkarama sent an urgent appeal to the United Nations Working Group on Enforced or Involuntary Disappearances (WGEID) regarding the case of Abdulrab Ahmed Abulrab Al Humaiqani, arrested in August 2015 by a group of men belonging to the Houthi-Saleh Coalition. Aged 36, Al Humaiqani works for the governorate of Sana'a and is a human rights and political activist as well as a researcher in international law. He lives in the northern district of Sana'a with his wife, who is pregnant with their seventh child.

Between 29 October and 2 November 2015, activists Mahmoud Yassin and Mohamed Ali Aboud Al Maliki were released by the Houthi-Saleh Coalition, after being detained incommunicado for more than two weeks at the Political Security Prison. Mahmoud and Mohamed had been arrested with 27 other activists by the Houthi-Saleh Coalition in October for organising a peaceful march to provide drinking water to the population of the besieged city of Taiz. Prior to their release, Alkarama had sent an urgent appeal to the United Nations Working Group on Arbitrary Detention (WGAD) calling upon the Houthi-Saleh Coalition to release them.