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.
As of July 20 there were 311,000 deaths in the Americas and that last week the region reached the level of 900,000 new cases with 22,000 deaths, mostly in Brazil, Mexico and the United States.
Costa Rica was seen as a model country in the containment of the coronavirus, but when an economic opening began in June, infections spiked and put hospitals' ability to deal with new cases at risk.
Long confinements and widespread pessimism in Latin America due to the advance of the coronavirus and the economic debacle have fueled tensions, which in some cases are beginning to turn into protests.
Panamanian doctors increased their protests, demanding supplies and additional personnel to attend the coronavirus pandemic that Thursday exceeded 50,000 infected people.
The United States on Friday slapped sanctions on another son of Nicaraguan President Daniel Ortega, accusing him of using a public relations firm to spread propaganda.