[JURIST] The UN's Working Group on Enforced or Involuntary Disappearances [official website] has joined Amnesty International [press release] in asking Colombian President Alvaro Uribe not to ratify the Justice and Peace Law, which was recently approved by the legislature [JURIST report]. The bill is designed to encourage former paramilitary soldiers and warlords to disarm, but rights groups are concerned that the law doesn't ensure cooperation with investigations into human rights violations. BBC News has more.