An incomplete offense is known as an "attempted" crime. This refers to a criminal act that is not fully carried out or completed due to some form of interruption or prevention. The person involved in such an act has the intention to commit a crime but fails to successfully complete it.
For example, if someone tries to rob a bank but is caught by security before they can escape with any money, this would be considered an attempted robbery, which is an incomplete offense.
In legal terms, for a person to be charged with an attempted crime, two elements generally must be present: the intent to commit the crime and some substantial step taken towards its commission. However, what constitutes a "substantial step" can vary depending on jurisdiction and the specific circumstances of each case.
It's important to note that even though the intended crime was not completed, attempted crimes are still illegal and punishable under law. The penalties for attempted crimes are usually less severe than for completed crimes but can still be quite serious.