ACLU said the decision conflicts with two other federal appeals court rulings and increases the possibility that the US supreme court will take up the issue

Police must get a search warrant to obtain records about cellphone locations in criminal investigations, a federal appeals court ruled Wednesday.

The American Civil Liberties Union said the decision by a three-judge panel of the fourth US circuit court of appeals conflicts with two other federal appeals court rulings and increases the possibility that the US supreme court will take up the issue. Attorneys last week asked the supreme court to review an appeals court ruling in a Florida case that said search warrants are not required.