Nev. Rev. Stat. § 171.168
"Fresh pursuit" as used in NRS 171.166 to 171.176, inclusive, shall include fresh pursuit as defined by the common law and also the pursuit of a person who has committed a felony or is reasonably suspected of having committed a felony in this state, or who has committed or attempted to commit any criminal offense in this state in the presence of the arresting officer referred to in NRS 171.172 or for whom such officer holds a warrant of arrest for a criminal offense. It shall also include the pursuit of a person suspected of having committed a supposed felony in this state, though no felony has actually been committed, if there is reasonable ground for so believing. Fresh pursuit as used in NRS 171.166 to 171.176, inclusive, shall not necessarily imply instant pursuit, but pursuit without unreasonable delay.
NRS 171.168