18-year-old arrested for killing 3 in Deep Ellum Halloween shootings

DALLAS - Dallas police said they’ve made another arrest in the Deep Ellum shootings on Halloween night. This new suspect is responsible for killing three people.

Triple murder suspect

What's new:

Dallas Police Chief Daniel Comeaux said 18-year-old Justin Murdock was arrested in connection to the shooting on South Crowdus Street. He is charged with capital murder of multiple persons.

Police said Murdock was involved in a confrontation over a group of girls. During the confrontation, shots were fired. Three people were killed, and several others were injured, including one who remains hospitalized.

Detectives were able to identify Murdock as a suspect through witness statements, surveillance videos, and photos taken that night, the chief said.

What they're saying:

"We've been working pretty much around the clock so we can bring some closure on these incidents. Last week, we arrested the suspect responsible for the shootings wounding seven people. And late Tuesday night, we arrested the suspect responsible for the capital murder on Crowdus Street," Chief Comeaux said.

He also credited the Deep Ellum business community for helping to bring Murdock to justice. 

"The cameras that are out there are truly helping us solve these crimes," he said.

What you can do:

Detectives are still investigating the events that led up to the shooting and said additional arrests are possible. They're asking for anyone who witnessed the shooting to come forward.

"It's still ongoing. Still a lot of witnesses. Based on the video that we did see out there, there's some additional witnesses out there that we really, really need to talk to who may have some video, related to the incident itself. We're still trying to pinpoint exactly what happened, but we believe it's a disturbance," said Deputy Chief Stephen Williams.

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 Martin, and 20-year-old Isaiah Boling.

Chief Comeaux said the overall injury toll was approximately 15 people, as several victims 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.

David Yancy's arrest

What we know:

U.S. Attorney Ryan Raybould held a news conference last week, along with Chief Comeaux, to announce the arrest of 31-year-old David Yancy.

Yancy is now in jail and facing seven counts of aggravated assault with a deadly weapon. He also had an outstanding warrant and will be charged federally as a felon in possession of a firearm.

The law enforcement officials said Yancy turned himself in within 30 minutes of "Trackdown" airing on FOX 4.

"I want to give major thanks to Trackdown and I'll give you just a little bit more information on what happened. Members of the community saw that, talked to the suspect, and he turned himself in. So it works. It helps," said Chief Comeaux. "Now, like the U.S. Attorney said, if you were involved in the other shootings, trust me, we already have video. We already have pictures. Help yourself and come talk to us first."

The backstory:

FOX 4's Shaun Rabb shared photos and video of the suspect on "Trackdown" last Wednesday night.

The security footage from around 1 a.m. on the night of the shootings showed a man in the 2600 block of Main Street wearing a camouflaged hoodie in a crowd of people. The man was 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.

Treyveion Demby's 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.

Deep EllumCrime and Public SafetyDallas