KAMUELA, Hawaii (June 26, 2012)--An autopsy will be performed on a Texas woman who died after snorkeling along the Kohala Coast of Hawaii's Big Island.

Police say Sokoon Yu, 71, of Flower Mound, snorkeling with a tour group in front of a resort Sunday when she became unresponsive.

Tour group workers pulled her out of the water and performed CPR.

Firefighters transported her to North Hawaii Community Hospital where she was pronounced dead.