An internal report shows screeners at Newark Liberty International Airport are properly executing standard pat-downs of passengers only 16.7% of the time.

The report by The Star-Ledger of Newark also shows that screeners identify and take appropriate action on prohibited items in only a quarter of all cases.

But it also found that in numerous categories, including removing prohibited items found during physical searches and exhibiting good listening skills, screeners performed their duties properly 100% of the time.

The report was compiled by undercover teams of Transportation Security Administration employees from other airports who observed the Newark Liberty screeners at work over several months. TSA officials conduct the evaluations at airports around the nation and use the results to improve their screening practices.