Officials suggest pipeline company hid problems after spill

This Jan. 19, 2015 file photo crews work to contain an oil spill from Bridger Pipeline's broken pipeline near Glendive, Mont., in this aerial view showing both sides of the river. Federal prosecutors are suing the Wyoming-based pipeline company for violations of pollution laws following spills in Montana and North Dakota. (Larry Mayer/The Billings Gazette via AP, File)