An ad-hoc committee (known as 1540 committee) for an initial mandate of 2 years under the Security Council charging the examination on the implementation of this resolution was established under paragraph 4 of the resolution. The committee released its first report to the Security Council on implementation of the resolution in April 2006. With the adoptions of Resolution 1673 (2006) and later Resolution 1810 (2008), its mandate was extended for a further two years and then another period of three years.