Updated at 4:32 p.m. ET
The Navy has apprehended 18 Marines and one sailor over their alleged involvement in human smuggling, drug offenses and other crimes, the Naval Criminal Investigative Service said.
Sixteen of the Marines were arrested in highly public fashion at a major West Coast military base Thursday.
On Thursday morning, after some 800 Marines gathered in formation at Camp Pendleton north of San Diego, Marine officials working with NCIS pulled out 16 people and placed them under arrest, as NPR's Tom Bowman reported.