US officials are investigating possible cases of Havana syndrome illness in Colombia, days before a visit by the Secretary of State.
Colombian President, Iván Duque disclosed that the country is investigating the reports, adding that the US is leading the inquiry.
First reported in Cuba in 2016, US diplomats around the world have since reported cases of the syndrome.
Americans who have been hit by Havana syndrome have described it as an intense and painful sound in their ears. Some of the estimated 200 affected have been left with dizziness and fatigue for months.