Alex Sundby is a senior editor at CBSNews.com. In addition to editing content, Alex also covers breaking news, writing about crime and severe weather as well as everything from multistate lottery jackpots to the July Fourth hot dog eating contest.

The disappearance of 84-year-old Nancy Guthrie has prompted investigators in Arizona to consider using advanced genetic genealogy techniques after standard DNA database searches failed to identify a suspect.

Nearly 44 years after 13-year-old Sarah Geer was brutally raped and strangled to death in a Cloverdale alley, the girl’s murderer has been convicted, the Sonoma County District Attorney’s

Nearly three weeks into the search for Nancy Guthrie, law enforcement says traditional investigative work is ongoing and unidentified DNA evidence may prove critical as the case progresses.

CHICAGO (WLS) -- Illinois State Police leaders were questioned Tuesday about DNA backlogs at state crime labs. Families of murder victims have been waiting for DNA to be processed as potential suspects roam the streets. RELATED: Hundreds of Chicago murders ...

Othram, a forensic DNA lab in The Woodlands, confirms they are in talks with all law enforcement working the Guthrie case. FOX 26's Sally MacDonald spoke to Othram co-founder Kristen Mittelman about how their lab uses tiny DNA samples to crack cases.

Nancy Guthrie, the 84-year-old mother of 'Today' show co-host Savannah Guthrie, has been missing for nearly three weeks.

The number of DNA profiles being studied and other details were not being released because of the active investigation, a sheriff's spokesperson said.