PANAMA CITY, Fla. (AP) — Two college students have been charged with sexually attacking a woman on a crowded Florida beach with bystanders who apparently did nothing.

The Bay County Sheriff’s Office said Friday that 22-year-old Delonte’ Martistee and 23-year-old Ryan Austin Calhoun were arrested and charged with sexual battery by multiple perpetrators over an attack that occurred sometime between March 10-12. It was unclear Saturday whether they had attorneys.

The attack went unreported even though it occurred around hundreds of witnesses during daylight.

Authorities learned of the attack when Troy, Alabama, police found a cellphone video of it while investigating a shooting.

Sheriff Frank McKeithen called the video the “most disgusting, sickening thing” he has ever seen. He said he expected more arrests.