In the last week, police have arrested two suspects in unrelated cold cases thanks to data gleaned from open-source ancestry site GEDMatch, reports the New York Times. That’s the same open-source ancestry site that was used to track down the alleged Golden State Killer earlier this year. One of the arrests this week was of a 66-year-old nurse who is suspected of killing a 12-year-old girl in 1986. The other arrest is of a 49-year-old DJ who strangled a schoolteacher in 1992. Thanks to data from GEDMatch, Texas law enforcement also thinks that a man who was executed in 1999 for killing a 9-year-old girl was now also behind the murder of a 40-year-old realtor in 1981.