Oregon Revised Statutes Procedure in Criminal Matters Generally § 146.090

(a) Apparently homicidal, suicidal or occurring under suspicious or unknown circumstances;

(b) Resulting from the unlawful use of controlled substances or the use or abuse of chemicals or toxic agents;

(c) Occurring while incarcerated in any jail, correction facility or in police custody;

(d) Apparently accidental or following an injury;

(e) By disease, injury or toxic agent during or arising from employment;

(f) While not under the care of a physician during the period immediately previous to death;

(g) Related to disease which might constitute a threat to the public health; or

(h) In which a human body apparently has been disposed of in an offensive manner.