Sudiksha Konanki, the missing American college student, was captured on surveillance footage walking with a group of friends in the last known image of her before she disappeared.

Sudiksha Konanki, 20, was last seen before dawn Thursday while walking on a beach in the Dominican Republic resort town of Punta Cana.

Konanki had been on a spring break trip, the posters stated. The missing person posters described Konanki as 5 ...