The four cover-up charges he was convicted of carry a total maximum sentence of 13 years.

Mr. Moore said the company did not concede the cover-up charges in its settlement with the Government.

He was later found not guilty of cover-up charges.

What happened during the next hour involves a fusillade of cover-up charges that reached the highest levels of the firearms agency.

It convicted Mr. Williams of tampering with witnesses and evidence after the shooting, and two relatively minor cover-up charges.

On Monday, it was announced that prosecutors were questioning five senior police commanders in connection with the cover-up charges.

The cover-up charge is under investigation by the Queens District Attorney, as well as the police.

If the cover-up charge is true and the aim was to spare the company the cost of a cleanup, it backfired, according to people then responsible for public safety.

The U.S. Attorney's office is looking into possible perjury and cover-up charges.

In addition, he is accused of tampering with witnesses and evidence, and two other cover-up charges.