PORTLAND — The names of Chun Ho Bahn, 63, of Bothell, Wash., and Ae Ja Kim, 61, of Gungwon Province, South Korea, were released Thursday by Oregon State Police. The women were married; their husbands remained hospitalized.

The bus, a 1998 Prevost motor coach, plunged through a guardrail and 200 feet down an embankment Sunday while returning to Vancouver, British Colum-bia, on the final leg of a nine-day vacation tour that included a stay in Las Vegas. The crash killed nine passengers.

Authorities earlier identified five victims: Yongho Lee, 75, and Dale Osborn, 57, of Washington state and three residents of South Korea: Youmin Kim, 11, Oun Hong Jung, 67, and Joong Wha Kim, 63.

Oregon State Police Lt. Gregg Hastings said the names of the final two victims would be released following family approval.

Investigators have yet to say what caused Oregon’s deadliest crash since 1971.