"Drew Peterson is cooperating with authorities."
http://www.suntimes.com/news/peterson/1563959,drew-peterson-timeline-050709.article
"According to reports, Scott Peterson has been going through his daybook,
comparing notes, telling detectives where he has been. They say he has been cooperating."
http://www.kcra.com/news/1986518/detail.html
"Police say husband [of then missing Ryann Crow) Jesse Crow is cooperating." (He's now charged with her murder.)
http://transcripts.cnn.com/TRANSCRIPTS/1002/16/ng.01.html
"Westerfield . . . was "overly cooperative" while they searched his house and motorhome, San Diego police Detective Johnny Keene said." (Convicted of murder of Danielle van Damm)
http://legacy.signonsandiego.com/news/metro/danielle/20020611-9999_noon.html
"Gebar Byrd, Sr., has been cooperating with us. He's answered questions at every turn we've asked. Anything we've asked him to do he's done," Ransom said. (Now charged with murder of his still-missing son.)
http://www.ksdk.com/news/local/story.aspx?storyid=200433
"She [Stacy Barker] is not in custody. She is cooperating with the
investigation," Nelson said. Barker is "not considered a suspect" at this
point, he said. (Emma Barker's body was located with no help from Stacy and Stacy Barker is now charged with her murder.)
http://articles.latimes.com/2009/mar/20/local/me-toddler-dead20
In court, there was a stunning answer from the Assistant State Attorney
when the judge asked him if [Dee Dee] Moore was being cooperative.
Assistant State Attorney Jay Pruner responds, "To the extent if cooperation involves giving a variety of explanations about how Mr. Shakespeare was killed including being killed by her 14-year-old son, her attorney, Mr. Shakespeare's cousin and drug dealer, or herself in self-defense; if that's cooperation your honor." (Dee Dee Moore is charged with the murder of Abraham Shakespeare.)
http://www.myfoxorlando.com/dpp/news/crime/020310dee-dee-moore-points-finger-at-own-son