The US State Department released the joint statement without specifying the signatory countries, but the Peruvian Foreign Ministry gave the list, which includes Costa Rica.
For four young adults across Latin America, 2020 was meant to be a year of freedom and opportunity. Instead, the coronavirus pandemic brought confinement and frustration.
The Panamanian authorities have pursued two theories: that it could be a case of score-settling by drug traffickers, or that it was an anti-Semitic attack.
The detainees were left to the order of the Public Ministry (prosecutor's office), which could prosecute them for the crime of illicit trafficking in persons.
The report, commissioned by the US Travel Association, showed spending by US residents will drop to $583 billion this year from $972 billion last year.