A 53-year-old man opened fire on a crowded bar patio in downtown Austin early Sunday morning, killing three people and wounding 14 others before police shot and killed him. The FBI now says the attack was "potentially an act of terrorism."

The suspect, identified as Ndiaga Diagne, drove a large SUV past Buford's Backyard Beer Garden on West Sixth Street several times before stopping just before 2 a.m, Fox News reported. Austin Police Chief Lisa Davis described what happened next:

"Put his flashers on, rolled down his window and began using a pistol shooting out of his car windows, striking patrons of the bar that were on the patio and that were in front of the bar."

Diagne then exited the vehicle with a rifle and continued firing. He drove westbound on Sixth Street to Wood Street, where police engaged and killed him at an intersection. First responders arrived within a minute of the 1:39 a.m. call. Davis confirmed Diagne never entered the bar.

Three people are dead. Fourteen more are wounded. And the FBI's Joint Terrorism Task Force is now leading the investigation.

Indicators of a terrorism nexus

Alex Dorn, acting special agent in charge of the FBI's San Antonio Field Office, addressed reporters at a Sunday press conference and did not mince words about the direction of the investigation:

"Obviously, it's still way too early in the process to determine an exact motivation, but there were indicators on the subject and in his vehicle that indicate potential nexus to terrorism."

Those indicators reportedly include clothing recovered from Diagne: a sweatshirt that said "Allah," an undershirt featuring an Iranian flag, and a sweater reading "property of Allah," according to sources and a photo obtained by Fox News.

Dorn was careful to note the investigation remains in its early stages, but left no ambiguity about its trajectory.

"We're just at this point prepared to say that it was potentially an act of terrorism."

Sources say at least one search warrant involving FBI agents is currently being executed in Pflugerville, where Diagne reportedly lived.

A long paper trail through the immigration system

Diagne entered the United States on March 12, 2000, on a B-2 short-term tourist visa. According to multiple federal law enforcement sources, he reportedly obtained lawful permanent residency in June 2006 through an IR-6 classification after marrying an American citizen. He became a naturalized citizen on April 5, 2013, during the Obama administration.

That timeline matters. A man who entered on a tourist visa more than two decades ago navigated the full pathway to citizenship. Whatever radicalization occurred happened on American soil, through American systems, under American oversight. And the system noticed nothing.

In 2022, Diagne was arrested in Texas in connection with a car accident that caused vehicle damage. Beyond that, the public record appears thin. No red flags. No intervention. No prevention.

Sen. John Cornyn of Texas connected the attack to the broader reality of border and immigration policy failures in a Fox News Digital interview:

"What it does emphasize to me is the importance of vetting people before they come across the border."

"Part of the problem is that the Biden administration, for four years, had open border policies and let who knows what into the country."

Cornyn was clear that this is not a question of current border security. President Trump has been briefed on the shooting, according to White House press secretary Karoline Leavitt. The border is secure now. The question is what was already let through.

"This isn't about people continuing to come into the country, because we know President Trump has secured the border. This is about what happens with people already here."

That distinction is critical. Four years of negligence produced a backlog of unknowns living inside the country. This attack forces a confrontation with that legacy.

Lone actor, systemic failure

Jason Pack, a retired FBI supervisory special agent with more than two decades of service, offered an early assessment of the investigation's likely direction:

"My sourcing suggests he was not part of an organized cell. This looks like a lone actor who may have been inspired rather than directed."

The "inspired rather than directed" framework has become grimly familiar to counterterrorism investigators. It describes individuals who absorb extremist ideology online or through informal networks and act without operational guidance from an established group. It is arguably harder to detect and harder to prevent than a coordinated plot.

Pack outlined the investigative steps ahead:

"Associates, family, neighbors, and coworkers will be interviewed to build a behavioral baseline and identify any missed warning signs. ATF will trace the pistol and rifle to establish how and when he acquired them."

He noted that any search warrant executed would focus on identifying a radicalization pathway or contact with extremist networks. That work is underway now in Pflugerville.

A neighborhood already on edge

The shooting did not occur in a vacuum. Hugo Mendez, owner of Blindside Tattoos and Blindside Lounge near the scene, told reporters the area around the bar has been a persistent problem:

"There is chaos in front of that bar every weekend, OK? This is not a new thing."

Mendez pointed the blame not at the street itself but at specific establishments, saying certain bars "don't carry the standard." Local outlet KVUE has reported ongoing safety concerns and multiple violent incidents in the area in recent years.

None of that context excuses or explains what appears to be a deliberate act of ideologically motivated violence. But it does raise a question cities across the country keep failing to answer: when does a known trouble spot become a soft target?

What comes next

The FBI's Joint Terrorism Task Force is now running parallel to the Austin PD's investigation. A search warrant is being executed. Investigators are tracing firearms, mapping contacts, and building a profile of a man who lived in this country for a quarter century before allegedly carrying out a massacre.

Authorities have set up a Victim Services Unit hotline for families seeking information. The bureaucratic response is in motion.

But three families will bury someone this week. Fourteen others are recovering from wounds inflicted on a Saturday night out. And the country is left, again, to reckon with the fact that the systems designed to vet, track, and flag potential threats failed to stop a man who, according to the FBI itself, carried indicators of terrorism on his body and in his vehicle.

The investigation will determine the motive. The evidence already determines urgency.