Theodore Bundy has confessed to eight Utah murders, while officials think he may be responsible for as many as 11 sex-related slayings.

Detective Dennis Couch, in a 90-minute interview Sunday, asked for specific details on Debra Jean Kent, 17, who disappeared Nov. 8, 1974; Nancy Wilcox, 16, who disappeared Oct. 2, 1974; and Nancy Baird, 23, Layton, who vanished July 4, 1975.In addition, officials want details on Melissa Smith, 17, Midvale, who was kidnapped Oct. 27, 1974, and Laura Aimee, 17, Salem, who was kidnapped Nov. 27, 1974. Both bodies were found abandoned in Utah canyons and had been sexually abused and beaten.

Salt Lake police believe Bundy was responsible for the slaying of Debbie Smith, who disappeared in February 1976 and whose decomposed body was found three months later near the Salt Lake International Airport. BYU Police Chief Robert Kelshaw adds the name of Sue Curtis, 15, North Salt Lake, to the list of Bundy victims, since she disappeared without a trace from a campus youth conference in 1975.

Tooele County and Grand Junction, Colo., also are investigating Bundy's tie to the slaying of Sandra Jean Weaver, 19. Weaver, a Wisconsin native, was last seen working in Salt Lake City on July 1, 1975. Her nude body was discovered on the bank of the Green River about two miles east of Grand Junction the following day. She had been raped and strangled.

Other unsolved cases are those of Kathy Harmen, Salt Lake City, who has been missing since 1972, and Johanna Leatherbury, 18, Salt Lake City, who disappeared in August 1971. Her body was found by the Great Salt Lake near the Saltair resort.

Another unsolved case involves an unnamed female victim who disappeared from Salt Lake in 1972.