The Castillo squad is a mix of some of Costa Rica's most promising up-and-coming hockey talent combined with seasoned Canadian expats who coach and sponsor the program.
Costa Rica's Chief Prosecutor, Emilia Navas, said at a news conference that several other suspects are being investigated, suggesting the possibility of further arrests.
The statement from the Judicial Branch announcing the arrest also indicated that former Banco de Costa Rica manager Mario Barrenechea was arrested at his home in Santa Ana.
The six professional racers were participating in the final round of the Nicoya Classic on Sunday morning when the accident took place, according to Costa Rican cycling news website CRCiclismo.