https:// www.msn.com/en-us/news/crime/the-latest-dna-site-says-it-didnt-know-about-use-by-police/ar-AAwqhI4

Genetic info obtained from a website service called GEDMatch was used to track down the supposed golden state killer. They of course denied they knew police obtained it from their databases.

Why would the authorities just now use such information to find such a notorious killer if they had the tools to do so?