Colombian President Juan Manuel Santos has met FARC's top leader Rodrigo Londono to follow up on the implementation of the peace agreement between the two sides. The meeting on Sunday took place in the department of Bolivar. Santos on Twitter said they discussed crucial topics such as the disarmament process and the reincorporation of FARC guerrilla members into society. "We revised advances in the disarmament timeline, ZVTN (zones of transition and normalization), reincorporation and regulatory issues," Santos said. The President also said that delegations from the government and the FARC had met in Cartagena city this weekend to mark 100 days since the implementation of the peace process began. Also watch: "In these two days, the government and FARC have met to mark the implementation of the Peace Agreement. They gave me a report: it is progress," continued Santos. Santos on Saturday said the FARC laying down their arms was a historic fact for Colombia, after over 50 years of war.