A visitor from Texas died Sunday while snorkeling with a tour group along the Kohala Coast, Hawaii County police said.

Police identified the victim as Sokoon Yu, 71, of Flower Mound, Texas.

Yu had been snorkeling with a tour group in waters fronting a resort on the 74-5000 block of Queen Kaahumanu Highway when she became unresponsive about 10 a.m. Sunday, police said.

Workers from the tour group pulled her from the water, performed CPR and took her to shore. Fire Department personnel continued CPR and took her to North Hawaii Community Hospital, where she was pronounced dead at 7:55 p.m., police said.

An autopsy will be conducted to determine the cause of death.