Investigators say DNA has tied Ted Bundy to the 1974 killing of 17-year-old Melissa Ann Smith, the daughter of a Utah police chief, Fox News and CBS News report. The case had long been listed as unsolved, the outlets report.

The break came from DNA evidence in the killing of another 17-year-old, Laura Aime, which had been linked to Bundy, the outlets report. Investigators then compared it with evidence kept from Smith's case for more than 50 years, Fox News and CBS News report. A very similar DNA profile linked to Bundy turned up in evidence from Smith's autopsy, a Utah County sergeant said, CBS News reports.

Summit County Attorney Margaret Olson said Smith's death also fit Bundy's "pattern, motive, means and opportunity," CBS News reports. "This case demonstrates the importance of preserving evidence," said Salt Lake County Sheriff Rosie Rivera. Officials have been in touch with Smith's relatives, none of whom still live in the area, the outlet reports.

"There may be more victims out there that we're not even aware of," said Salt Lake County Sheriff's Office Detective Ben Pender, Fox News reports. Investigators plan to keep the evidence to test in other cases that may be linked to Bundy, the outlet reports.

Bundy was executed in Florida in 1989 for the 1978 murders of two women at a sorority house at Florida State University, CBS News reports. A vial of his blood found in Florida in 2011 gave investigators his full DNA profile, the outlet reports. Hunters found Smith's body in October 1974, the outlets report. Fox News says she was found in a wooded area near the line between Summit and Salt Lake counties.

Bundy killed at least 30 women and girls in several states in the 1970s, CBS News and Fox News report. A Fox News photo caption says he confessed to 28 murders.

What we know: Investigators say DNA links Bundy to the 1974 killing of Melissa Ann Smith.
What we don't: Whether DNA will tie Bundy to other unsolved cases.