A chilling detail has emerged from a video a couple took at a restaurant moments before the husband was shot dead and his wife injured.
Gabriel Vargas, 28, was dining at the Aquarium Restaurant in Houston, in the US state of Texas, with his 24-year-old wife when he was shot dead on Thursday (local time).
His wife was wounded and rushed to hospital and the suspect, Danny Cazares, died in the restaurant of self-inflicted injuries.
Video posted on social media by the couple moments before the shooting shows them toasting with their glasses of wine before Mr Vargas is seen taking a drink.
However, unbeknownst to them, Cazares is seen in the background sitting alone at the bar.
Houston Police Department Executive Chief Matt Slinkard told reporters investigations were continuing, but it was not believed they were known to each other.
He added the couple had eaten dinner at the restaurant and were paying their tab when they were shot.
"The suspect was sitting at the other end of the bar and from footage we've seen that will be a part of the investigation, this suspect got up in a very quick manner, and went around the bar to the area where the man and female were together," Chief Slinkard said.
"That suspect, at that time, immediately started firing rounds. [Vargas] immediately went down, the female injured went down as well.
"And then, from the footage that we've seen, this person we know to be our suspect... immediately [died of self-inflicted injuries]."
'Horribly tragic incident'
Chief Slinkard said police were still investigating the motive behind the shooting.
"This is a horribly tragic incident," he said.
"This is the type of situation that should make us all pause, send out as many prayers as we can for all of the families and all the lives that would be affected by such a tragic incident like this."
Houston Police said in a statement Cazares had a criminal history, with prior arrests for felon in possession of a weapon and a history of mental health issues.
"This was a tragic, isolated incident with no relationship between the victims and the suspect," the statement said.
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