Former Glee star Naya Rivera is missing, authorities have said, and the search is on for Rivera at a Southern California lake, according to The Associated Press. The search for Naya Rivera will continue this morning at Lake Piru. Mark Salling and Naya Rivera attend the celebration of Glee's Golden Globe nominations with InStyle and 20th Century Fox held at Sunset Tower on Jan. 9, 2010 in West Hollywood. Big Sean and Naya Rivera arrive at the 15th Annual Trevor Project Benefit held at Hollywood Palladium on Dec. 8, 2013. Naya Rivera and Ryan Dorsey at the UNICEF Dia de los Muertos Black and White Masquerade Ball.