BISMARCK, N.D. (AP) - The Latest on the legal challenge and protest of the four-state Dakota Access oil pipeline (all times local):
A federal judge has denied the Standing Rock Sioux Tribe's request to temporarily stop construction on the four-state Dakota Access oil pipeline near their reservation in North Dakota.
Tribal officials challenged the Army Corps of Engineers' decision to grant permits for Dallas-based Energy Transfer Partners' $3.8 billion pipeline that is intended to carry oil from North Dakota to Illinois.
Friday's ruling by U.S. District Judge James Boasberg comes amid growing protests over the pipeline, which would cross the Missouri River less than a mile upstream of the reservation.
The tribe argues the pipeline could impact drinking water and that construction has already disturbed ancient sacred sites.
A lawyer for the tribe says the ruling will be appealed.
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.
U.S. District Judge James Boasberg says he'll rule by the end of Friday on the Standing Rock Sioux tribe's request to block the project, which will carry oil from North Dakota to Illinois.
The rally is scheduled from 3 p.m. to 6 p.m. Friday on the Capitol grounds, and participants will march there from a bridge over the Missouri River, which the tribe says will be threatened by the pipeline.
Many are coming from the protest site near the Standing Rock Sioux Reservation, about 40 miles south of Bismarck.
The Standing Rock Sioux say the project threatens water supplies and has already disrupted sacred sites. The developer, Dallas-based Energy Transfer Partners, says modern technology allows quick detection of leaks. Pipeline supporters also say it would cut the amount of oil that travels by train.
A North Dakota state agency that regulates private investigation and security firms is looking into the use of force against protesters of the Dakota Access pipeline.
The confrontation last weekend between protesters and private security guards left some guards injured. Tribal officials say about 30 protesters were pepper-sprayed and some were bitten by dogs after construction workers bulldozed alleged sacred sites.
Monte Rogneby, an attorney for the North Dakota Private Investigation and Security Board, says the board received complaints about use of the dogs.
He says the probe should also find out whether the private security personnel at the site are properly registered and licensed. Rogneby says the board has contacted private security firms that it believes were involved in the protest, but he would not name them.
Rogneby says the board wants to finish its investigation "sooner rather than later."
A federal judge is set to deliver a key ruling Friday on the four-state pipeline.
An attorney says the Yankton Sioux Tribe's lawsuit over the Dakota Access pipeline is not expected to have any immediate bearing, and she wouldn't say whether the tribe would ask a federal court to temporarily block construction of it.
The lawsuit from the South Dakota tribe was filed Thursday and is separate from the one filed by the Standing Rock Sioux on which a federal judge is expected to rule Friday.
Tribal attorney Jennifer Baker says the lawsuit will take time, but that the Yankton Sioux wants to stand beside Standing Rock, Cheyenne River and other tribes because they share rights to the water and the land.
The complaint says the pipeline route passes through the tribe's treaty territory, aboriginal title lands and areas of cultural and spiritual importance.
The Great Plains Tribal Chairman's Association has asked U.S. Attorney General Loretta Lynch to send federal monitors to the site of a large pipeline protest in North Dakota.
The Standing Rock Sioux tribe and others are trying to stop the $3.8 billion Dakota Access pipeline, saying it threatens their drinking water and has disturbed sacred sites.
The association, made up of tribal leaders in the Dakotas and Nebraska, aims to defend tribal rights.
President John Yellow Bird Steele sent a letter to Lynch on Thursday saying protesters have been attacked by private security with guard dogs and that racial profiling is occurring. Authorities say some protesters are armed with hatchets and knives, and Saturday's protest injured guards and dogs.
Lynch's office did not immediately respond to a request for comment.
U.S. District Judge James Boasberg says he'll rule by the end of Friday on the tribe's challenge to the pipeline, which will carry oil from North Dakota to Illinois.
Green Party presidential candidate Jill Stein says she's working with North Dakota authorities to arrange a court date on charges related to her participation in a protest against the Dakota Access pipeline.
Stein has acknowledged spray-painting construction equipment Tuesday in North Dakota. Stein and running mate Ajamu Baraka were charged Wednesday with misdemeanor counts of criminal trespass and criminal mischief, and authorities issued arrest warrants.
Stein defended her actions to the Chicago Tribune (http://trib.in/2cfvzAg ) Thursday during a campaign stop in Chicago. She said it would have been "inappropriate for me not to have done my small part" to support the Standing Rock Sioux.
The tribe says the pipeline threatens sacred sites and drinking water.
The $3.8 billion pipeline is to carry oil from western North Dakota to Illinois.
A federal judge is set to deliver a key ruling on the four-state Dakota Access pipeline that has drawn thousands of protesters to a construction site in North Dakota in recent weeks.
U.S. District Judge James Boasberg says he'll rule by the end of Friday on the Standing Rock Sioux tribe's request to block the $3.8 billion project, which will carry oil from North Dakota to Illinois.
The tribe argues the project threatens water supplies and has already disrupted sacred sites. The developer, Dallas-based Energy Transfer Partners, says modern technology allows quick detection of leaks. Pipeline supporters also say it would cut the amount of oil that travels by train.
A weekend confrontation between protesters and private security guards left some guards injured and some protesters with dog bites.
This item has been corrected for style to make "pipeline" lowercase in all instances.
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