RENO, Nev. (AP) — Local activists and leaders of the NAACP in Nevada are joining the call for the immediate arrest of a Ferguson police officer who shot and killed an unarmed 18-year-old Missouri man.

Officials for the Nevada NAACP and the Progressive Leadership Alliance of Nevada delivered letters with their demands to the U.S. attorney offices in Reno and Las Vegas on Monday while Michael Brown was eulogized at his funeral in St. Louis.

In addition to arresting officer Darren Wilson, the Nevada letter calls for the firing of the Ferguson police chief and the appointment of a special prosecutor in the case.

They also want Attorney General Eric Holder to launch a nationwide investigation of systemic police brutality and harassment they say is widespread in minority communities nationally.