Oklahoma Native American tribe sues energy companies for quake damage

By Lenzy Krebiel-BurtonPAWNEE, Okla. (Reuters) - The Pawnee Nation filed a lawsuit on Friday in tribal court in Oklahoma against 27 oil and gas producers, seeking damages for an earthquake they said was caused from man-made activity related to hydraulic fracturing, or fracking.The Native American group claimed that wastewater injected into disposal wells helped trigger a 5.8-magnitude earthquake in September, the strongest on record in the state, that damaged several Pawnee Nation buildings, inc