These kits are part of an initial wave of 200 kits that have been sent for testing under the National Institute of Justice’s grant to address Detroit’s backlog of over 11,000 untested rape kits. The DNA evidence in these 21 cases matched to the DNA profiles of suspected offenders involved in at least one other rape case, according to ClickOn Detroit. In some cases, the evidence matched to the DNA in up to five other cases, according to the article.

Testing a rape kit can identify a potential assailant, confirm a suspect’s contact with a victim, corroborate the victim’s account of the sexual assault and exonerate innocent defendants. And of course, testing rape kits can connect suspects to other crimes.

In addition to identifying the possible serial rapists, the DNA evidence in the batch of 153 kits has yielded another 38 DNA matches in the database, according to The Daily Beast. All of the cases now need to be investigated, says Wayne County Prosecutor Kym Worthy in the article.

“People think when you get a CODIS hit, we can just go out and arrest that person,” she says in the article. “But a DNA hit is never the whole case. We have to go find the witnesses, do the old-fashioned kind of investigation. They’re cold cases—they’ve just been sitting there. We have to reinvestigate all these cases.”

“I say ‘reinvestigate,’ but some were never investigated properly, frankly,” Prosecutor Worthy adds.

With a grant from the federal government’s Office on Violence Against Women, the team created the “400 Project” to test 400 randomly selected kits from the backlog in order to determine the nature of the evidence and what kinds of cases are connected to the backlog. Among the 400 tested kits was a fourteen-year-old kit containing DNA evidence linking Antonio Jackson, now 38 years old, to the 1997 home invasion and rape of a woman at gunpoint. It is alleged that Jackson broke into the victim’s home at 3:50 a.m. on February 17, 1997, held her at gunpoint and raped her while her children slept in the same bed. He now faces charges of first degree criminal sexual conduct and home invasion and felony firearm charges.

The 400 Project is the first phase in a multi-phase approach to eliminating Detroit’s backlog. Detroit is one of two cities participating in a grant funded by the National Institute of Justice (NIJ) to study, plan and implement rape kit reform. Joyful Heart is a collaborative partner in this effort. Out of the project, the NIJ hopes to create a national standard for rape kit testing. As expressed by John Collins, Director of the Michigan State Police Forensic Science Division:

This is such an emerging problem that has revealed itself on the national level. There’s not a national standard on how you make these decisions of what you test and in what order. In some extent, it’s like building the plane as you fly it.