NEWARK, N.J. (AP) -- Officials have fired eight screeners at Newark Liberty International Airport in New Jersey after they were captured by surveillance cameras sleeping or violating other standards.

The Transportation Security Administration had suspended the employees after they were videotaped in a baggage room in December.

The TSA would not say how many of the firings were for sleeping on duty.

Their union tells The Star-Ledger of Newark all eight would appeal their dismissals.

Meanwhile, the newspaper reports the TSA also is looking into photographs of screening supervisors who appear to be sleeping in front of monitors used for detecting explosives and other threats.

Two of the supervisors say they were not working at the time the photos were taken.