Shailene Woodley has been arrested for trespassing.
The 24-year-old actress was protesting the Dakota Access Pipeline, which aims to transport crude oil from the North Dakota Bakken region through South Dakota and Iowa into Illinois, crossing the Missouri River.
The star was among a reported 100 protestors who turned up to the construction site for a peaceful protest, amid concerns that the pipeline project could potentially cause irreversible harm to the drinking water for the Standing Rock community - who live just one mile from the river - as well as the river's ecosystem.
In a video posted by TMZ.com, the Divergent star said: "I was just walking back to the RV which is right there, so we could go back to camp peacefully. They grabbed me by the jacket and they said I wasn't allowed to continue. They have giant guns and batons and zip ties and they're not letting me go."