BISMARCK, N.D. — North Dakota’s Democratic candidate for governor says the state needs to examine its approval process for pipelines in the wake of a large protest near the Standing Rock Reservation.

Marvin Nelson tells KFYR-TV he’s not against pipelines but feels the approval process should ensure that no one is harmed and cultural sites aren’t damaged.

The tribe believes the $3.8 billion Dakota Access Pipeline threatens sacred sites and the reservation’s drinking water.

Republican governor candidate Doug Burgum issued a statement saying North Dakota needs to welcome energy expansion “with a safe, smart approach.”

Libertarian Party candidate Marty Riske says in a statement that if state officials can’t find a peaceful resolution, “private third-party intermediaries” should be called in.

The Dakota Access Pipeline is to move North Dakota oil to Illinois.