Authorities to announce update in Deep Ellum Halloween shooting case

DALLAS - Federal authorities and the Dallas Police Department will announce new developments regarding the Halloween night shootings in Deep Ellum that killed four people and injured at least 15.  

Video released on Wednesday showed one of the suspects wanted for injuring seven people with his indiscriminate gunfire. 

Operation Deep Cover

What's new:

U.S. Attorney Ryan Raybould will hold a news conference at 2:30 p.m. on Thursday, along with Dallas Police Chief David Comeaux. They are expected to share new updates related to Operation Deep Cover.

Big picture view:

On Monday, Raybould announced Operation Deep Cover, a safety initiative that will provide federal assistance for policing Deep Ellum.

Raybould said Operation Deep Cover provides more federal resources for policing the popular nightlife district, including more uniformed and plainclothes officers in Deep Ellum. Federal authorities will also review Dallas police cases from Deep Ellum since 2024, making Deep Cover a very targeted operation.

"If you're thinking about committing a crime here, you will not know who is watching. We will have an increased state, local and federal presence. You'll only know that someone is, and it starts right now with actions, not just words," Raybould said.

Raybould said crimes in Deep Ellum prosecuted through Operation Deep Cover will go to the federal level, meaning those convicted would be more likely to serve their full sentence.

Deep Ellum Halloween shootings

The backstory:

Four people were killed and many more were injured in three separate shootings in Deep Ellum on Halloween night, with the violence unfolding in a 75-minute span.

The first shooting happened around 12:20 a.m. Sunday in the 2600 block of Elm Street, police said. A second shooting followed at about 1:05 a.m. in the 2600 block of Main Street, and the third was reported at roughly 1:35 a.m. in the 200 block of South Crowdus Street.

The deceased victims have been identified as 21-year-old Kaniesa Scott, 28-year-old Unique Elise Benjamin, 25-year-old Anthony McCleary, and 20-year-old Isaiah Boling.

Dallas police Chief Daniel Comeaux said the overall injury toll of approximately 15 people remains fluid, as several victims transported themselves to local hospitals following the gunfire. 

Officers had been given extra assignments in Deep Ellum to handle anticipated Halloween crowds. In one instance, officers positioned less than two blocks away ran toward the sound of gunfire and performed life-saving measures, reviving at least one victim, Comeaux said.

Shooting suspect caught on camera

What we know:

At around 1:04 a.m. on the night of the shootings, security footage provided to FOX 4 shows a man in the 2600 block of Main Street wearing a camouflaged hoodie in a crowd of people.

The man is seen pulling a gun out of the side of his pants and holding it by his side before putting it away in his front waistband.

Dallas Police Lt. Matthew Finley said the suspect began indiscriminately firing shots, injuring seven people in the parking lot he was standing in.

What we don't know:

Police are still searching for this suspect and have asked the public for tips that might lead to his identity.

Treyveion Demby arrest

Dig deeper:

While announcing Operation Deep Cover, Raybould announced the arrest of Treyveion Demby, who is now facing federal charges for the unlawful possession of a firearm.

Officials said Demby was wearing a black ski mask and pointed a handgun towards Main Street in Deep Ellum while police were responding to the Halloween shootings.

Demby initially refused to surrender the handgun to police. After he surrendered the gun, he attempted to flee before being subdued and arrested.

A background check revealed Demby’s weapon had been stolen in 2017. He also has four prior convictions in Dallas for aggravated robbery and was sentenced to 10 years in prison in February 2020. He was released in September 2025 on parole.