<P> Each month, law enforcement agencies report the number of known index crimes in their jurisdiction to the FBI . This mainly includes crimes reported to the police by the general public, but may also include crimes that police officers discover, and known through other sources . Law enforcement agencies also report the number of crime cases cleared . </P> <P> For reporting purposes, criminal offenses are divided into two major groups: Part I offenses and Part II offenses . </P> <P> In Part I, the UCR indexes reported incidents of index crimes which are broken into two categories: violent and property crimes . Aggravated assault, forcible rape, murder, and robbery are classified as violent while arson, burglary, larceny - theft, and motor vehicle theft are classified as property crimes . These are reported via the document named Return A--Monthly Return of Offenses Known to the Police . Part 1 crimes are collectively known as Index crimes, this name is used because the crimes are considered quite serious, tend to be reported more reliably than others, and are reported directly to the police and not to a separate agency (ex - IRS) that doesn't necessarily contribute to the UCR . </P> <P> In Part II, the following categories are tracked: simple assault, curfew offenses and loitering, embezzlement, forgery and counterfeiting, disorderly conduct, driving under the influence, drug offenses, fraud, gambling, liquor offenses, offenses against the family, prostitution, public drunkenness, runaways, sex offenses, stolen property, vandalism, vagrancy, and weapons offenses . </P>

The part 1 crimes of the ucr consist of how many offenses
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