Murder of Traci Hammerberg

The family moved to Saukville, Wisconsin c. 1976 where Hammerberg had attended Port Washington High School.

[1] According to Ozaukee County Sheriff James Johnson, on the night of the murder, Hammerberg left a house in Saukville where she was babysitting to walk to a grocery store to meet with friends.

[7] It was not immediately clear to the Ozaukee County Police Department if she had been killed on site or her body moved there.

[5][6][10] Hammerberg's murderer was later identified through forensic genealogy to be Philip Cross, a Wisconsin man who died in 2012 of a drug overdose.

[4] Police built a DNA profile of her alleged killer using blood from underneath her fingernails and semen recovered at the scene.

[4] The police reached out to the Los Angeles Federal Bureau of Investigation (FBI) team that solved the Golden State Killer case for their expertise with forensic genealogy technology.