bomb threats

File - The U.S. Central Command at MacDill Air Force Base is seen, Feb. 6, 2017, in Tampa, Fla. (AP Photo/Susan Walsh, File)

Brother and sister are charged after an explosive device was found outside a Florida Air Force base

A brother and sister have been charged after an explosive device was found outside a gate at MacDill Air Force Base in Tampa. U.S. Attorney Gregory Kehoe says Alen Zheng fled to China with his sister Ann Mary Zheng, who was arrested upon her return to Florida.

A graduation themed printed mural is seen on the Howard University campus, one of the historically Black universities under a bomb threat earlier this month.

School leaders say HBCUs are undeterred after a series of bomb threats

Joe Hernandez

"We have to show that we are not afraid," Dillard University President Walter Kimbrough says. The FBI is probing the threats as racially or ethnically motivated violent extremism and hate crimes.

Firefighters and ambulance attendants remove a covered body from the 16th Street Baptist Church in Birmingham, Ala., after a deadly explosion detonated by members of the Ku Klux Klan during services in 1963. Leaders say the history of violence against people of color should be passed on to new generations so the lessons of the past can be applied.

Bomb threats against Black institutions are deeply rooted in U.S. history

The Associated Press

"HBCUs are resilient institutions that will persist through all forms of adversity," the Congressional Bipartisan HBCU Caucus said after bomb threats earlier this month," the statement said.

First responders arrive on the scene Thursday to investigate a report of an explosive device in a pickup near the Library of Congress in Washington, D.C.

Man Who Claimed To Have A Bomb Near The U.S. Capitol Surrenders

Brian Naylor

A North Carolina man who claimed to have a bomb in his truck in front of the Library of Congress gave up after an hours-long standoff with police and is now in custody. No bomb was found in the truck.

Mail Bomb May Have Been Sent Through Opa-Locka Post Office Facility, Report Says

Jay Weaver

A federal investigation into crudely made pipe bombs sent through the U.S. mail to prominent Democratic figures is focusing on Florida, New York and…

The FBI investigated multiple reports of suspicious packages at government facilities in and around Washington, D.C., on Monday.

Man Arrested In Connection With D.C.-Area Suspicious Packages, Authorities Say

Laurel Wamsley, Ryan Lucas

The packages contained "potential destructive devices," the FBI said. A person taken into custody was set to appear in federal court on Tuesday.

"Unabomber" Ted Kaczynski carried out a series of bombings across the country over a 17-year period, from 1978 to 1995.

From 'Unabomber' To 'Mad Bomber,' A Look At Past Serial Bombers

Linda Wang

A bomber had paralyzed Austin, Texas, with a string of explosions that killed two people. Here's a look back at other cases of multiple bombings in the U.S.

Officials investigate the scene where suspect Mark Anthony Conditt died in an explosion early Wednesday. His red vehicle was trapped between two white vans in Round Rock, Texas.

Austin Bombing Suspect, Mark Anthony Conditt, Left A 'Confession' Before Standoff

Scott Neuman, Richard Gonzales, Amy Held, Bill Chappell, Colin Dwyer

Officials say the dead suspect Mark Anthony Conditt, left a lengthy cellphone recording describing his bombing rampage. They characterized it as an "outcry of a very challenged young man."

Agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives join the investigation at a FedEx distribution center in Schertz, Texas, where a package exploded Tuesday. Authorities believe the incident is linked to the recent string of Austin bombings.

Austin On Edge As Another Explosion Is Reported Late Tuesday

Scott Neuman, Richard Gonzales, Bill Chappell

Austin police say a military-type artillery simulator injured an employee at a Goodwill store late Tuesday, but that it was unrelated to earlier package bombs in an around the city this month.

Police maintain a cordon near the site of an incident reported as an explosion in southwest Austin, Texas, on Sunday.

Austin Police Warn People To Avoid Packages After 4th Explosion Injures 2

Shannon Van Sant, Scott Neuman

The blast comes on the heels of three package-bomb explosions that killed two people and injured two more, as well as a bomb threat that canceled a Saturday concert at the South by Southwest festival.

"It's Devastating And Hurtful:" Anti-Defamation League Raise Concerns About Anti-Semitic Threats

Luis Hernandez

At least 86 Jewish organizations in the United States have received threats since Jan. 1, 2017, according to authorities. South Florida is no exception.…

Bomb threat shuts down Davie Jewish school; Congresswoman Asks To Find 'These Bastards'

U.S. Congresswoman Debbie Wasserman-Schultz scheduled a press conference at her office in Sunrise Monday morning to address a wave of anti-Semitic acts in…