The allegations clearly involved a violation of Federal criminal law.
The allegations, he added, involved a "small percentage of officers, but they can make or break a force."
Other allegations involved incidents that happened too long ago to be prosecuted, he said.
The allegations involving the murder cases are in the first of the three indictments.
But the new allegation, involving the moving of two old radars, may cause problems for the Administration, some officials said.
Most allegations involve human rights abuses and crimes against humanity.
One is the Denver investigation, in which the only allegations so far involve financial disclosure, rather than corruption.
By contrast all allegations involving coalition forces are subject to formal inquiries.
But because the allegation involved a gun, he said, concerns for the officer's safety justified the frisk.
According to Scarborough, soon after the death, allegations "spread all over the Internet" that he had been involved,.