A federal monitor who oversees the NYPD's stop-and-frisk reform effort says the police department is drastically underreporting the number of stops still taking place. According to police, those numbers have dropped from their 2011 high of nearly 700,000 down to fewer than 12,000 annually.

But Peter Zimroth, the monitor who was appointed to oversee reforms after stop-and-frisk was ruled unconstitutional in 2013, cast doubt on those numbers in his latest report, issued last Friday. 

"[Zimroth's] problem is with the NYPD's documentation of encounters with the public," Daily News reporter Stephen Rex Brown told WNYC. "He says that officers are continuing not to document them properly, and that supervisors of those officers are then not supervising the cops properly." 

There are currently 22,000 officers and sargeants in the NYPD. If only 11,629 were reported in 2017, that would mean only half of all officers recorded a single stop-and-frisk incident.

"That means that a fairly routine part of police work is not being documented as much as [Zimroth] expects," Brown added. 

Brown spoke with WNYC's Richard Hake.