N.Y.P.D. to Remove DNA Profiles of Non-Criminals From Database

Two years ago, detectives offered a 12-year-old boy they had arrested a McDonald’s soda during questioning. When the boy left, the detectives took the straw, got his genetic profile and put it in a local database. The child’s family had to petition a court to get it removed, the Legal Aid Society said.

For years, New York City has been amassing an immense local database of DNA, collecting samples not just from people convicted of crimes, but from people simply arrested or questioned, including minors.

The existence of the database, which has about 82,000 profiles, has drawn fire from civil liberties advocates, who point out it is hard to get a profile erased once it is put in and argue it violates the privacy rights of many innocent people.

Now, the police commissioner, Dermot F. Shea, seeking to quell some of the criticism, has announced that the New York Police Department is overhauling its rules for collecting and using DNA evidence, which is stored by New York City’s Chief Medical Examiner.

To start, the police are going to audit a...