In a civil case, the person who knowingly signs answers to interrogatories when they know the answers are wrong signs under the pains and penalties of perjury. If they know the answers are incorrect, they have committed perjury, a criminal offense, but that is difficult to prove.
In the case of criminal prosecution, the withholding of exculpatory evidence that would help or exonerate the defendant is unconstitutional, a civil rights violation. However, the Supreme Court has decided that prosecutors have immunity from prosecution. The defendant may get a new trial or released from prison if it can be proven. A criminal defense attorney who withholds discovery can be sanctioned by the Bar.
You can read more about discovery in general at the related link.
Added: While not necessarily a "crime" per se(i.e.: a violation of criminal statutes) it IS a serious procedural and ethical violation which could affect the outcome of the case and for which the court could, and probably would, sanction the violator.
The 'interception' of ANYONE's mail is a federal offense under US Postal Regulations.
yes
More information about the original offense from which they were fleeing is needed, but, it could be.
Blackmail is a criminal offense.
No. In America, theft is prosecuted by your local municipality's attorney as that would constitute a criminal offense. The withholding of your security deposit is (possibly) a civil case.
It is a criminal offense.
Theft is considered a criminal offense.
It cannot.
Under the ex post facto rule, you cannot be charged with a criminal offense if it was not a criminal offense at the time you committed it. By the same token, if you committed a criminal offense that has since been repealed (meaning this is no longer a criminal offense) you still are considered having a criminal record for that offense.
To constitute a criminal offense you must have 2 factors; an ACT, done with a criminal INTENT. The facts needed to prosecute a criminal offense are known as the elements of the crime. A statute defines what actions are criminal and the law also determines what mind set is needed by the actor to make them guilty of a crime. For further information please see the related link below.
Yes, DUI is a criminal offense in the Commonwealth of VA.
Not enough information is discosed in the question. Serious offense, or minor offense?