CNN reports that police dogs “scent lineups” are being called into question by a Texas criminal case in which a longtime sheriff’s deputy was accused of murder. Michael Buchanek was accused in 2006 in the strangulation murder of a female friend based on dog-scent lineups, which the Innocence Project of Texas calls “junk science that’s being used by prosecutors and judges to convict people.”
The nonprofit group wants state governments to ban the use of dog-scent lineups. It says an unknown number of people have been wrongly accused or convicted from the dog-scent lineups. Buchanek is suing in connection with his case. But supporters say dog-scent lineups are a powerful crime-fighting tool helping investigators crack cases across the country.