The OJD December 10, 2009, Media Release gives a summary of this case (other Media Releases).
Read the full case:
State of Oregon v. Roy Lee McCullough, Jr. (SC S056910) (decided December 10, 2009)
“This case involves the construction of the statute that defines the crime of hindering prosecution ….
…
In a unanimous opinion by Justice Thomas A. Balmer, the Supreme Court affirmed. The Court first concluded that ORS 162.325(1) applies to the hindrance of juvenile proceedings as well as criminal proceedings….” (Link to full case.)
You can link to the statute from the Oregon Legislature’s ORS website.