The 19-year-old from Buffalo died in the crash Oct. 9.
The dispute is over a local property used by protesters.
The 65-year-old's body was found after a 30-minute search.
A preliminary breath test indicated his blood alcohol was 0.138.
She wasn't wearing a helmet and alcohol was involved, officials say.
People from Minnesota and out of state were among those arrested last week.
Roy Davis was rescued by coworkers after falling through ice in Lake Hattie Township.
It happened in Hubbard County, northwestern Minnesota.
It's one of several incidents involving partially frozen lakes in recent weeks
A 61-year-old man has died after spinning into a ditch on his ATV, sending him into swampy water.
The State Patrol says the 26-year-old driver was also not belted.
A man and a woman have been charged with animal mistreatment.
It happened in northern Minnesota on Friday morning.
A standoff with police ensued, during which he set fire to much of the house.
The crash happened Tuesday and the man died Friday morning.
The suspect committed suicide and two women died of homicide.
A friend has identified the suspected gunman to local media.