ATF

The ATF’s National Integrated Ballistic Information Network is able to compare shell casings to link them to guns and crimes. ATF IBIS Chief Walter Dandridge shows how it works.

Investigators arrested 41-year-old Timothy Ireland Jr. at his home near Toledo, Ohio after he threatened to shoot and kill first term Rep. Alexandria Ocasio-Cortez from New York in a Facebook post last month.

Investigators have released a flyer featuring a new clue in the unsolved case of a teenager who stepped on an explosive device in Central Park and lost part of his leg.

Investigators have released a flyer featuring a new clue in the unsolved case of a teenager who stepped on an explosive device in Central Park and lost part of his leg.

A 23-year-old American man, suspected of human smuggling, died Monday following a shootout with U.S. Customs and Border Protection officers at the San Ysidro Port of Entry, authorities confirmed.

The site was too hard to miss. Scores of weapons — rifles and pistols — were laid out in the driveway of a home located in Holmby Hills, one of the toniest neighborhoods in Los Angeles in an area known as the “platinum triangle.”

D.C. police and federal officials seized millions of dollars worth of heroin and marijuana from a Northeast D.C. home in what the mayor called the largest-ever seizure of heroin in the region.

Rapper Tekashi69 is in federal custody on racketeering and firearms charges, along with a number of his former associates, officials say.

A man dressed in all black and wearing a “ballistic vest” fired a Ruger semi-automatic rifle at a church in a small South Texas community on Sunday, killing 26 people and wounding about 20 others in what the governor called the deadliest mass shooting in the state’s history. Victims were churchgoers as young as five and as old as 72....

A gunman who was upset that his ex-wife had been awarded their home in their divorce was found dead after he shot at her and killed both his parents then exchanged gunfire with police in Pennsylvania.

News4’s Meagan Fitzgerald reports on new details about evidence in the mansion murders case. Legal experts disagree on how it will affect the trial of the one man charged in the four killings.

Authorities are offering a $61,000 reward for information leading to the arrest of suspects who shot a federal agent in the face Friday morning on Chicago’s South Side.

A federal agent was shot in the head on Chicago’s South Side early Friday, according to police.

Sheriff Scott Israel gave a detailed account of the initial timeline of the Florida high school shooting that left 17 dead and 14 injured. The ATF confirmed that the shooter had purchased the firearm used in the attack legally over a year ago.

Las Vegas Shooter Stephen Paddock had at least 12 “bump stocks” attached to his guns, which allowed him to fire his weapons at a machine gun-like rate. Lawmakers are now pushing for them to be banned. Here is how these devices work.

One of the nation’s leading gun-control groups has filed a lawsuit against the makers and sellers of “bump stocks,” the devices used by the gunman in what is now the deadliest mass shooting in modern U.S. history. The Brady Center to Prevent Gun Violence filed the lawsuit on behalf of victims of the Oct. 1 shooting in Las Vegas. The...

Federal agents are trying to determine why a man pulled over for speeding in Tennessee was carrying a cache of weapons including two submachine guns and 900 rounds of ammunition.

Federal investigators found a disconnected vent pipe in the Silver Spring, Maryland, apartment building that exploded last year, killing seven people and injuring dozens, a new report from the Bureau of Alcohol, Tobacco, Firearms and Explosives says.

With 74 people killed in July alone, Chicago has reached more than 400 homicides for the year so far, a number that keeps the city on track to outpace 2016, one of the bloodiest years recorded in decades.

As leads dwindle in the investigation into the Central Park explosion that blew off the lower leg of a visiting college student, authorities have announced a $40,000 reward in the case, noting the compound used in the explosive has been seen in recent attacks overseas.  Local and federal authorities made the announcement Wednesday morning in a renewed push for the…