Nasir Tawhedi, 27, is alleged to have amassed weapons as part of a plot allegedly designed to spark fear in Americans as they went to the polls, the Justice Department said Tuesday.

Threats from both at home and abroad are worrisome, senior officials from the Department of Homeland Security, the FBI and members of Congress say.

ABC News' Pierre Thomas reports that the DOJ indicted two leaders of a white supremacist chat group, alleging they solicited terrorist attacks and plotted to kill "high value" targets around the world

The Department of Justice has indicted two alleged leaders of a white supremacist "terrorgram" chat group with federal crimes, including the killing of a federal officer.

Christopher Wray told the House Appropriations Committee Thursday there has been a heightened level of threats toward the U.S.

FBI Director Christopher Wray says he's concerned a lone wolf or small groups will draw "twisted inspiration" from events in the Middle East or Russia.

The Justice Department announced the arrest of a man they say planned to carry out attacks on churches over the weekend after pledging support to the terror group ISIS.

The FBI claims 18-year-old Alexander Mercurio was on the verge of conducting an alleged terror plot involving attacks on multiple churches in Coeur d'Alene, Idaho.

The six intelligence chiefs testified about "worldwide threats" on Monday.

The U.S.' top intelligence officials warned about Russia's war in Ukraine and expressed concerns China may use AI to interfere with U.S. elections, among other issues, at a hearing on Capitol Hill.

The NYPD is on high alert for the annual Halloween parade. The event is a particular concern for security as Israeli forces attack Gaza.

Hamas and Hezbollah militants associated with the Israel-Hamas war “may potentially be encountered at the southwest border," U.S. Customs and Border Protection warned

Despite no credible threats, law enforcement officials have not been taking any chances since the beginning of the Israel-Gaza conflict.

Officials are on alert for any fallout after Israel declares war with Hamas. Security is ramping up at sensitive sites, including synagogues from New York to Los Angeles.

The Department of Homeland Security on Wednesday announced $20 million in grant funding aimed at preventing targeted violence and terrorism in the United States.

Christopher Worrell disappeared just days before his sentencing for pepper spraying a police officer during the Jan. 6 riot.

The Michigan AG says domestic terrorism is one of the biggest threats in the U.S. after last week's sentencing of two men who plotted to kidnap Gov. Gretchen Whitmer.

It's not clear if the bill has enough Republican support to pass the Senate.

Eleven people armed with long guns who claimed to be a part of group called "Rise of the Moors" were arrested following a standoff with Massachusetts police Saturday.

In several recent FBI investigations, the Oklahoma City bomber has appeared.

The Department of Homeland Security warns of more possible violence in wake of the Capitol siege.

The DOJ's inspector general released a report identifying significant issues with how the FBI handled investigations into so-called 'homegrown violent extremists.'

Homeland security officials in New Jersey are warning residents of the potential terrorism threats the state faces from extremist and white supremacist groups.

A Queens woman who pleaded guilty last August to plotting to build a bomb for a terrorist attack inside the U.S. was sentenced to 15 years in prison Thursday.

A truck driver, Thomas McVicker, was arrested for threatening to commit mass shooting at a Memphis church.

The El Paso mass shooting and other attacks deemed "domestic terrorism" have renewed questions about the threat and whether U.S. authorities have the tools to stop it.