10-Year-Old Boy Killed, 4 Others Injured During Texas Flea Market Shooting, as Suspect Turns Himself in

David Negrete, 19, is charged with aggravated assault with a deadly weapon. Other charges could follow, police tell PEOPLE

David Negrete, the 19-year-old suspected gunman in a mass-shooting at a Texas flea market Sunday evening, is now in custody, the Pearland Police Department announced Tuesday.

Negrete turned himself into the Brazoria County Jail around 10 a.m. Tuesday morning after being on the run for more than 40 hours, according to police.

At the time of his arrest, he was listed as one of the Texas Department of Public Safety’s Top 10 Fugitives and a $15,000 award was being offered for his capture.

Negrete is charged with aggravated assault with a deadly weapon, but in an interview with PEOPLE around the time of the arrest, Chad Rogers, a spokesman for the police department, said new charges could still be filed as the investigation develops.

“Obviously, getting Mr. Negrete in custody will shed light on things,” Rogers tells PEOPLE.

The Sunday shootout, which unfolded at Cole’s Flea Market shortly after 5:30 p.m., left a 10-year-old boy dead and four others injured, according to police, who said all victims were rushed to the hospital following the shooting.

Although police have not released the boy’s name, he has been identified on GoFundMe as Francisco Vicente Duarte. He was pronounced dead at the hospital, according to police.

Known to vendors at the flea market where his mother had worked for years as “Chente,” the “angelito” was hit in the cross-fire, according to Liliana Jaimes, who started the fundraising campaign to offset the mother’s funeral costs. One day into the campaign, some $9,000 has been raised.

Three teenagers — a 14-year-old girl and 16- and 18-year-old boys — were hospitalized for their injuries, along with a 37-year-old man, the latter of whom has since been released from the hospital, according to Rogers.

Police believe an altercation between “two sets of people” led to the shootout at the flea market, Rogers tells PEOPLE, noting that there were “at least two shooters, maybe three.” Police are not yet clear on the details leading to the gunfire-fueled argument, but do not believe that it was a targeted attack on the flea market.

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Both of the injured teenage boys are under investigation by the police, Rogers tells PEOPLE.

The injured 16-year-old, whose name has so far not been released by police, underwent surgery for his gunshot wounds and is now “being looked at beyond just being an innocent bystander,” Rogers says, adding that with him just coming out of surgery it “limits what our investigators can get from him.”

The 18-year-old, later identified by police as Cruz Meza, has been released from the hospital and is now in custody, charged with tampering with physical evidence and making a false statement to law enforcement. (Julianna Espino, 18, who was not injured in the shooting, has been arrested under the same charges, according to police, who say that both are now in custody at the Brazoria County Jail.)

It's not immediately clear if any of the suspects have lawyers.

So far this year there have been 602 mass shootings across the country, according to Gun Violence Archive, which tallies the shootings and defines a mass shooting as a shooting in which four or more people are struck by gunfire, either fatally or non-fatally.

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