A website that posts sex-related ads says it's cooperating with Detroit police in the investigation of four women found dead in car trunks, including three who promoted their services online.
Backpage.com says in a statement Tuesday that it reached out to police with "detailed information" about ads that a suspect may have posted on numerous websites. The company says that the investigation is expanding to involve at least 30 different ads on multiple websites.
Detroit police didn't immediately comment. Since Dec. 19, the bodies of four women have been found in car trunks just blocks apart in Detroit. Police Chief Ralph Godbee is not calling them serial killings, although their online ads on Backpage are a common thread.