Have followed some tragic cases here where LE found that and used it in court to help get convictions. They often use video they get from Walmart where perps are seen buying shovels, bleach, plastic tarps, etc. The murder of Nicole Lovell is one I recall.
MONTGOMERY Co. , Va. (WSET) --Prosecutors told jurors that a former Virginia Tech student charged as an accessory in the death of a 13-year-old girl was closely involved in helping a friend plan the killing. But Natalie Keepers’ lawyers told the jury Tuesday that Keepers believed the talk of...
wset.com
BCI and PCSD were grabbing every scrap of evidence they could find to build this case. To paraphrase Donald Rumsfeld "You build a criminal case with the evidence you have, not with the evidence you wish you had". They didn't start looking closely until almost a year later, so its amazing that they were able to find as much as they did. Thank goodness they quickly locked the victims' Facebook accounts. They got lucky with AW being a pack rat.