Officials in Utah have formally closed a 51-year-old cold case after using new DNA technology to identify a murdered teenager as a victim of serial killer Ted Bundy.

Laura Ann Aime, 17, disappeared after leaving a party on Halloween in 1974. Her body was discovered about one month later by hikers in the American Fork Canyon.

On Wednesday, the Utah County Sheriff's Office announced that new testing "confirmed irrefutably that DNA evidence recovered from Laura's body verified the existence of DNA belonging to Bundy".

Between February 1974 and February 1978 Bundy murdered at least 30 women. He has also he's been linked to many more killings throughout the country.

Before he was executed in Florida in 1989, Bundy had confessed to Aime's killing, but since he would not elaborate or give any detail to his actual involvement in her death, "the Sheriff's Department elected to keep this case open until investigators could prove, without a shadow of doubt", that he was her killer, the sheriff said in a statement.