The arrest of Brad Lander was the latest case in which an official has been held while protesting President Trump’s immigration agenda.

© Olga Fedorova/Associated Press

Officials said that the body was spotted in Olympic National Park in Washington State on Monday, but that it was pinned behind a surge of water and was hard to reach.

The plot, described by one official as being “as serious as it gets,” involved a plan to shoot moviegoers at a Washington State mall as they fled an explosion.

Their bodies were found near the summit of Mount Katahdin, at the end of the Appalachian Trail, officials said, after a search that began on Monday.