(KCCR) — The Cheyenne River Sioux Tribe says vehicles connected to the Keystone XL pipeline were escorted off the Cheyenne River Reservation by Tribal Police on Monday. Tribal members identified the vehicles around five pm on Monday. Cheyenne River Sioux Tribal Police then escorted the unknown number of vehicles off Reservation land from the direction they entered. A Tribal resolution states that quote “Any and all Keystone XL trucks and escort vehicle that drive onto our Reservation, be turned around immediately and go back the way they entered. The vehicles were first discovered by concerned Tribal members who saw them parked in a parking lot in Eagle Butte. Once the purpose of the cargo and identity of the company that hired the vehicles were determined, law enforcement escorted the vehicles east on US Highway 212. Tribal Chairman Harold Frazier says vehicles and personnel working on the pipeline are not welcome on the reservation and that unlike the United States, we welcome free speech and concerned citizens standing up for the law. Frazier added quote…”This is Sioux Territory, we will not stand for more encroachments and defilement of our land.” End quote.