An attorney won’t be sanctioned for failing to discover that his client had lied about when digital photos were taken in order to support her case against New York City police officers.

Jason Leventhal was able to escape a sanction related to his having provided the city with 67 “staged photos” he got from his client, even though he could have uncovered his client’s fraud by checking the images’ metadata.

This decision “showcases the importance of verifying a client’s representation,” Judge William H. Pauley III, of the U.S. District Court for the Southern District of New York, said.

Leventhal represented...