They pumped their firsts in the air and chanted, "I believe that we will win" and carried signs that read "Respect Our Water" and "Water Is Sacred".

A weekend confrontation between protesters and private security guards on private land near the protest site left some guards injured and some protesters with dog bites.

Almost 40 people have been arrested since the protest began in April, including tribal chairman Dave Archambault II, though none stemmed from Saturday's confrontation between protesters and construction workers.

Sam Grant of the Omaha tribe addresses members of the Ponca, Santee, Winnebago and Omaha Tribes in Nebraska and Iowa along with others during a rally on Thursday, Sept. 8, 2016, in front of the Army Corps of Engineers offices in Omaha, Neb., to protest against the Dakota Access Pipeline in the Dakotas and Iowa.

Tribal officials challenged the Army Corps of Engineers' decision to grant permits for Dallas-based Energy Transfer Partners' $3.8 billion pipeline that is meant to carry oil from North Dakota to IL.

Flags of Native American tribes from across the U.S. and Canada line the entrance to a protest encampment near Cannon Ball, North Dakota where members of the Standing Rock Sioux Tribe and their supporters have gather to voice their opposition to the Dakota Access Pipeline (DAPL), September 3, 2016.

The Corps' approval of the permit allows the oil company to dig the pipeline under the Missouri River just upstream of the reservation and the Tribe's drinking water supply.

"Officials with pipeline company Energy Transfer Partners didn't return The Associated Press' phone calls or emails seeking comment".

Many of those protesting the $3.8 billion Dakota Access pipeline are planning to gather at the North Dakota Capitol on the day a judge is to rule on a tribal challenge to the project.

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But he boxed himself into a corner, on several occasions having to remind her of the time , prompting some accusations of sexism. NBC's Matt Lauer sought clarification on whether the question was about those who have served or want to serve.

On Thursday, North Dakota's archaeologist said that piece of private land was not previously surveyed by the state would be surveyed next week and that if artifacts are found, pipeline work still could cease.

Green Party presidential candidate Jill Stein and running mate Ajamu Baraka camped with protesters Monday, and her campaign spokeswoman said Stein spray-painted construction equipment Tuesday.

Monte Rogneby, an attorney for the North Dakota Private Investigation and Security Board, says the board received complaints about use of the dogs.

"We want to respect clean water for the people serviced by the Missouri River", an Indianapolis protester said.

Ahead of the ruling, more than 1,000 people - including families with children - gathered at the site of the protest, ABC News reported. Further, the roadblocks and random searches and seizures - have delayed and harassed teachers, schoolchildren, farmers, and people arriving at camp.

The tribe, meanwhile, accused the pipeline supporters of plotting against Native American communities over greed for expanded energy production. The Great Plains Tribal Chairman's Association asked the Justice Department to send monitors to the site because it said racial profiling is occurring.

State authorities announced this week that law enforcement officers from across the state were being mobilized at the protest site, some National Guard members would work security at traffic checkpoints and another 100 would be on standby.

In late July, the Standing Rock Sioux Tribe sued federal regulators for approving most of the final permits necessary for the 1,170-mile, $3.8 billion pipeline to move forward.