Two men accused of helping former Nissan Motor Co. chief executive officer Carlos Ghosn flee criminal charges in Japan must remain in custody as they fight extradition after a U.S. judge denied them bail.

Former Green Beret Michael Taylor and his son, Peter, were arrested in Massachusetts in May at the request of the Japanese government. U.S. prosecutors had asked that they be denied bail, pointing out that the two allegedly helped carry out one of the "most brazen and well-orchestrated escape acts in recent history.”

U.S. District Judge Indira Talwani in Boston on Thursday denied an emergency petition that the Taylors filed this week requesting immediate release in part because of the spread of the coronavirus in the jail where they are being held. She noted that there is a presumption against bail in extradition cases and said the Taylors had not shown they were likely to succeed in ultimately blocking the extradition request from Japan.