Human rights — Arrest and detention — Right to life — Torture and ill-treatment — Arbitrary execution — Political opposition — International Covenant on Civil and Political Rights, 1966

International tribunals — Procedure — United Nations Human Rights Committee — Optional Protocol to the International Covenant on Civil and Political Rights, 1966 — Communication alleging violations of Covenant — Joinder of similar communications — Admissibility criteria — Parallel examination by another international quasi-judicial tribunal — Exhaustion of domestic remedies — Reparation by State party — Obligation to investigate violations and prosecute those found responsible — Compensation to victims' families