MACOMB TOWNSHIP, Mich. - Police are digging in Macomb Township as part of a search for victims in unsolved homicide cases, and the dig might be connected to convicted killer Arthur Ream, according to authorities.
READ: Inside the mind of Arthur Ream, convicted killer writing behind barsZarzycki disappeared April 20, 1986, when he was 13 years old.
Ream was convicted of murdering her in 2008, leading investigators to her gravesite, according to authorities.
RELATED: More of convicted killer Arthur Ream's prison writingsInvestigators are working with authorities from Warren, Canton Township, Macomb County, Michigan State Police and the FBI.
Police said the primary goal of the search is to figure out what happened to the girls and who is responsible.