BISMARCK, N.D. -

Actress Shailene Woodley has been arrested during a protest of the four-state Dakota Access pipeline in southern North Dakota.
    
Morton County Sheriff's Department spokesman Rob Keller says the "Divergent" star was arrested Monday for criminal trespass and engaging in a riot during a protest at a construction site that involved about 300 people.
    
Both charges are misdemeanors that carry a maximum punishment of 30 days in jail and a $1,500 fine. Woodley's publicist did not immediately comment.
    
Keller says 27 people were arrested during protests at two construction sites that prompted the shutdown of a state highway for several hours. No injuries were reported.
    
The $3.8 billion pipeline is being built by Dallas-based Energy Transfer Partners and will cross through North Dakota, South Dakota, Iowa and Illinois.

1:30 p.m.

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The Army Corps of Engineers says it won't yet authorize construction of the four-state Dakota Access pipeline on federal land in southern North Dakota.
    
The corps also is asking Energy Transfer Partners to respect the government's earlier request that it voluntarily stop construction on private land within 20 miles of Lake Oahe. The company didn't respond to a request from The Associated Press for comment Sunday or Monday.
    
The corps statement comes after a federal appeals court ruling Sunday allowing construction to resume within 20 miles of the lake. The corps must still give its blessing for work on federal land bordering and under the lake, and officials say they're still reviewing whether there need to be reforms in considering tribal views on infrastructure projects.
    
The Standing Rock Sioux tribe opposes the pipeline.
    
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6:35 a.m.
    
North Dakota's congressional delegation and a laborers union are applauding a federal appeals court ruling allowing construction to continue on a small stretch of the four-state Dakota Access pipeline.
    
The ruling Sunday clears the way for pipeline work to resume within 20 miles of Lake Oahe in North Dakota. The pipeline is otherwise nearly complete.
    
The Laborers International Union says the ruling affirms that the pipeline is a lawfully permitted project.
    
Earthjustice attorney Jan Hasselman tells The Bismarck Tribune that continuing construction would be "a tragedy."
    
The Standing Rock Sioux Tribe is still appealing a court ruling that let work on the entire pipeline go forward. And federal agencies have prohibited construction on a section right at Lake Oahe where land is owned by the Army Corps of Engineers.