MANDAN, N.D. (AP) — North Dakota Gov. Jack Dalrymple has asked for federal help in coping with the long-running protest of an oil pipeline that drawn thousands to land near the Standing Rock Sioux reservation.

Dalrymple says he has asked White House officials as well as three federal agencies to help supply people and money “to maintain public safety.”

A federal judge declined Friday to block the pipeline, but the federal agencies stopped work near Lake Oahe while they re-examine their approval of the pipeline on Army Corps of Engineers’ land. They also asked the pipeline company to voluntarily stop work on a 40-mile stretch, though it isn’t clear whether Energy Transfer Partners has complied.

Dalrymple says that will mean indefinite delay in resolving the dispute. His office says the state and Morton County have spent a combined $1.1 million so far to police the protests.