Complex sentence: Fearing that all the riders were now subject to arrest, Nash advised them to stay out of sight from the police, but this was compromised by Wilbur and Hermann, who had called the police after fleeing from the terminal area.
Split into simpler sentences: Fearing that all the riders were now subject to arrest, Nash advised them to stay out of sight from the police. However, this was compromised by Wilbur and Hermann, who had called the police after fleeing from the terminal area.