An official warned that "an immense tragedy" appeared to be unfolding.
The opioid that has killed thousands of Americans was used in Nebraska execution of death row inmate.
The event's organizers said some LGBTQ community members voiced concerns about feeling unsafe with officers participating armed and in uniform.
Poppy Seed Wash could deliver harmful and even deadly opiates such as morphine or codeine.
Lawmakers approved an article they had abused their authority and failed to control office expenses, including $1 million in renovations to offices.