A Sandy man charged with abandoning his 7-year-old son in Boise last week waived his right Friday to extradition, agreeing to be released to Idaho authorities for prosecution.

Edward Tuinman, 29, and his wife, Deborah, 28, face charges in Ada County, Idaho, of felony abandonment of a child.To clear the way for releasing the Tuinmans to Idaho, Salt Lake County prosecutors dismissed felony theft misdemeanor traffic charges against the couple.

Ada County Sheriff Vaughn Killeen said Friday that his officers will likely come to Salt Lake City Tuesday or Wednesday to pick up the Tuinmans.

Police arrested the Tuinmans Saturday night near Nephi after a 5-year-old Salt Lake boy helped investigators identify the 7-year-old boy who was found abandoned Jan. 4 at a rest stop near Boise. The abandoned child was Eddie Tuinman, who appeared to have been severely abused, suffering bruises, burns and broken bones, which had healed recently.

The Tuinmans left their Sandy home about three months ago for Buena, Wash., looking for work. Apparently unsuccessful, they left Washington and headed for Arizona, allegedly abandoning Eddie along the way. Because of the nature of Eddie's injuries, Utah and Washington authorities are investigating possible abuse he could have suffered in those states.

Eddie has been placed in a foster home in Boise, said Killeen. "I just talked to the Health and Welfare people and they said (Eddie) has improved and is doing very, very well."

Meanwhile, Utah Division of Family Services investigators continued Friday to determine who should care for Eddie Tuinman's siblings - two brothers, ages 6 years and 9 months; and a sister, age 9.