On Jan. 8, a team of agents from the country's Judicial Investigation Agency gathered documents from two Nature Air offices and from the DCAG, the government entity responsible for overseeing civil aviation. The following day, Jorge Valverde Esquivel, the airline's operations manager resigned after reportedly telling the DGAC that there were "irregularities in the operation of the company," according to the Costa Rica Star. The resignation of Valverede brought to four the number of employees Nature Air has lost recently, and in a Jan. 11 letter to the airline, the DCAG said Nature Air is no longer sufficiently staffed to ensure safe operations. Nature Air provided both scheduled domestic and regional flights and charters on single- and twin-engine aircraft. Photos posted on a Costa Rica website showed the loading of the caskets of William and Zachary Steinberg onto a Copa Airlines airplane.

Source: Forbes January 15, 2018 18:22 UTC