Oved Bernardo Mendoza Argueta, 37, was arrested in the shooting on a capital murder charge, police said.
An arrest affidavit obtained by WFAA said Argueta's spouse worked at the Chick-fil-A, and that Argueta entered the restaurant with a handgun and shot and killed the two victims.
The arrest affidavit said Argueta's spouse witnessed the shooting and positively identified him.
Police told media in a press conference on Wednesday they believe this was a targeted attack, but more information about a possible motive has not been released.
According to the U.S. Immigration and Customs Enforcement (ICE) and Removal Operations (ERO), Argueta is a citizen and a national of El Salvador.
ICE and ERO officers in Dallas have reportedly lodged an immigration detainer with Irving PD on Argueta. This detainer is a request from ICE to allow ERO to gain custody of Argueta for removal purposes, ICE stated.
On Thursday, the owner-operator of Chick-fil-A in Las Colinas released the following statement:
"Our hearts are broken by the tragedy that unfolded inside our restaurant Wednesday. We will miss our two Team Members dearly. Right now, our focus is on providing care for our Team and the victims’ families. I want to thank the Irving Police Department for their professionalism and compassion. We will continue working closely with them as they conduct their investigation."
