A fourth person connected to a decade-long sex trafficking operation involving three wealthy brothers with ties to Miami Beach and New York’s luxury real estate surrendered to authorities in Miami-Dade on Wednesday.

Tal Alexander, one of three wealthy brothers accused of operating a “long-running sex trafficking scheme,” was denied bond in federal court Friday after a judge ruled he posed a significant flight risk.

Twin brothers and real estate moguls Alon and Oren Alexander appeared in a Miami-Dade courtroom Friday as their parents watched from the gallery. The 37-year-old siblings face state felony charges, including sexual battery.