Chilean President Michelle Bachelet says her government is ready to countersue Bolivia over a water dispute at the International Court of Justice.

Bolivian President Evo Morales said Saturday that his country would sue Chile in the Netherlands-based court seeking to force Chile to pay compensation for using the Silala river in a border region.

Bachelet said Monday that Bolivia is claiming ownership over shared water resources and that the Silala flows into Chile by the simple law of gravity. She said Bolivia has recognized the Silala as an international river for more than 100 years.

Landlocked Bolivia asked the international court in 2013 to order Chile to negotiate over Bolivia's claim for access to the Pacific. The case is being heard by the court, whose rulings are final and binding.