With the investigation still ongoing and the local police department leaving many questions unanswered after that brief press conference, here is a short clip of federal agents visiting the scene on Sunday.

Here’s a picture of the suspect in Sunday’s deadly car crash, courtesy of the Brownsville PD.

Brownsville police chief Felix Sauceda names the suspect in the case as Brownsville resident George Alvarez, 34, whom he says has an extensive cirminal record.

He says the department is still awaiting toxicology results from the suspect and that it is too soon to determine a motive, telling one reporter that investigators have not yet definitively ruled whether the episode was an accident or intentional.

He adds that the victims are all male and that the investigation remains ongoing before swiftly departing, answering only a handful of questions from the press.

My colleague Graig Graziosi has this report on the latest developments.

Here’s the latest on the security camera footage of the incident, of which we are only able to share an abridged version for reasons of sensitivity.

Despite the tensions surrounding the influx of Venezuelan migrants and the subsequent declaration of emergency, Sister Norma Pimentel, the executive director of Catholic Charities of the Rio Grande Valley, said the Ozanam shelter had not received any direct threats prior to Sunday’s events.

Victor Maldonado, the center’s director, likewise said there had been no prior threats – but there have been since.

“I’ve had a couple of people come by the gate and tell the security guard that the reason this happened was because of us,” he told the AP.

Brownsville has seen a surge in the number of Venezuelan migrants arriving over the last two weeks for unclear reasons, local authorities said in light of yesterday’s incident.

On Thursday, 4,000 of about 6,000 migrants in Border Patrol custody in Texas’ Rio Grande Valley were Venezuelan.

The surge prompted Brownsville commissioners to indefinitely extend a declaration of emergency during a special meeting held last week, as local, state and federal resources coordinated enforcement and humanitarian response.

“We don’t want them wandering around outside,” Pedro Cardenas, a city commissioner, said in the wake of Sunday’s deadly crash. “So, we’re trying to make sure they’re as comfortable as they can be so they don’t have to go out and look for anywhere else.”

Brownsville has long been an epicentre for migration across the US-Mexico border and it has become a key location of interest for next week’s end to pandemic-era border restrictions known as Title 42. The Ozanam shelter is the only overnight shelter in the city and manages the release of thousands of migrants from federal custody.

About 2,500 migrants have crossed through the Rio Grande river daily into Brownsville in the past few days, Mr Cardenas said.

He added that Border Patrol is aware of the city’s capacity of 1,000 at their processing area near the crossing point and a downtown building where city employees and volunteers guide migrants on how to purchase bus or plane tickets to their final destinations. The city is considering expanding those services to accommodate needs in the coming days, Mr Cardenas said.

While 80 per cent of people released from federal custody typically leave the same day, the city’s emergency management official said, a bottleneck has formed over the past few days.

“Most of the people coming across don’t want to stay in Brownsville, but we don’t have enough buses for them to buy their ticket to leave,” Mr Cardenas said. “Some are waiting for family members.”

The Ozanam shelter itself can hold 250 people.

“In the last two months, we’ve been getting 250 to 380 a day,” its director Victor Maldonado said.

While the shelter offers migrants transportation during the week, they also use the city’s public transportation.

Rochelle Garza, president of the Texas Civil Rights Project, said in a statement shared on Sunday afternoon: “I hope that today serves as a wake up call, and that state officials will begin investing in a humanitarian response that might have helped the people who were impacted by this morning’s tragedy.”

US representative Vicente Gonzalez said that local officials are in communication with the federal government about the crash.

“We are all extremely sad and heartbroken to have such a tragedy in our neighbourhood,” he said.

The aforementioned Bishop Flores said Mass at the Ozanam migrant shelter last night for the victims of yesterday’s horrific road smash.

“Many first responders attended the Mass,” he states. “Pray for them also, for the burden they carry is great.”

As we await further updates on this story, here’s a look back at my colleague Graeme Massie’s orginal report on the tragedy.

While local police have insisted so far that they have yet to establish whether the driver’s actions were intentional or accidental, comments made by one man at the scene cast doubt on that position.

Luis Herrera, 33, who was hit by the SUV on Sunday and suffered a broken arm in the incident, claimed the driver was taunting the migrants before the crash took place.

“He crossed the street and he hit the gas and he drove by my legs, and hurt my arm. The others, he killed almost all of them,” The Washington Post quotes him as saying.

The Post also reports that Mr Herrera recalls the driver yelling: “You’re invading my property!”