The Human Rights Committee is entrusted with the oversight of the ICCPR. It is composed of 18 independent experts who are elected on the basis of expertise, not their nationality.
The HRC has four main functions:
a) to review implementation of the rights in the ICCPR by considering periodic reports from States Parties;
b) to issue General Comments that give guidance in the interpretation of the rights;
c) to consider inter-State complaints ( i.e., complaints lodged by one State Party against another State Party - there have been none to date); and
d) to consider communications (i.e., complaints) from individuals submitted under the first Optional Protocol procedure.