Dina Temple-Raston

French investigators are searching for a motive in last night's deadly attack in Nice, France in which more than 80 people were killed and 200 injured by a man who purposely steered a truck through a crowd of Bastille Day revelers.

At least 84 people have been killed in the French city of Nice after a truck plowed into a crowd there. NPR's Dina Temple-Raston explains the latest on the investigation into that attack.

French authorities continue the investigation into a deadly attack in Nice, France. A truck drove through a crowd watching fireworks for Bastille Day, killing at least 77 people.

The death toll is growing after an attacker drove a truck through a Bastille Day crowd in Nice, France. Local officials say at least 75 people were killed and more than 50 injured.

A large truck smashed into people who were watching Bastille Day fireworks in Nice, France, Thursday night. More than 70 people were killed.

More than 70 people have been killed and more than 100 injured after a truck crashed into a Bastille Day holiday crowd in Nice. Authorities say the truck was loaded with explosives.

The Dallas Police Department and federal law enforcement agencies continue to investigate suspect Micah X. Johnson's motive for killing police officers during a peaceful protest last Thursday.

The man who fatally shot five Dallas police officers may have had plans for a wider attack, according to the city's police chief. Investigators are piecing together Micah Xavier Johnson's final days.

Dallas police have said more about Friday's sniper shootings that killed five officers. Police have interviewed the shooter's mother and found bomb-making materials at his house.

Investigators are working to confirm if the gunman in the Dallas shooting was the author of a manifesto posted on social media. The attack at a Black Lives Matter protest killed five police officers.

A sniper opened fire at a protest march in Dallas overnight, killing five law enforcement officials and wounding others. The gunmen told police before he was killed that he was working alone, but investigators are continuing to comb through the gunman's electronics and background to determine if that is actually the case.

Turkish authorities believe the Istanbul bombing points to ISIS and a cell of Russian speakers, a contingent that makes up a large portion of the terrorist group.

The investigation into a shooting rampage and bombing at Istanbul's international airport is continuing as officials are trying to determine whether ISIS is behind the attack.

As investigators continue to delve into the life of Orlando nightclub shooter Omar Mateen, the evidence is beginning to suggest the killings may have more in common with a traditional mass shooting than an ISIS-inspired terrorist attack.

The FBI is combing through the life of the man they say opened fire in an Orlando nightclub. President Obama characterized him as "an angry, disturbed, unstable young man who became radicalized."

There are new details emerging from Orlando, Fla., where a lone gunman opened fire on a popular gay nightclub early Sunday morning. Omar Mateen killed more than four dozen people, making the attack the worst mass shooting in modern U.S. history. FBI Director John Comey says the shooter was radicalized but his connection to ISIS is tenuous.

A gunman, identified as Omar Mateen, opened fire early Sunday morning at a gay nightclub in Orlando, Fla. At least 50 people were killed and 53 injured in the course of the attack.

A gunman has killed 50 people in a nightclub in Orlando, making it the worst mass shooting in U.S. history. NPR's Dina Temple-Raston has the latest.

A Somali-American, who pleaded guilty to attempting to join the Islamic State, has been approved for America's first jihadi rehab program. His counselor explains the de-radicalization process.

Opening statements began in what is billed as America's largest ISIS recruitment trial. The government says it will offer testimony and secret recordings of the defendants planning to go to Syria and join ISIS. Defense attorneys say their clients were not part of any conspiracy and are being wrongly portrayed as terrorists.