Authorities in Iowa are investigating the fatal shootings of six people they believe were killed by a relative who took his own life when confronted by police.

A federal judge on Tuesday dismissed a lawsuit from the Justice Department seeking information on Arizona voters, another defeat in the Trump administration's nationwide push for voter data.

The quake hit around 9 a.m. local time, about 13 miles from Greenback, Tennessee, which is about 30 miles south of Knoxville, the U.S. Geological Survey said.