New information about the shooting has been released by the Houston Police Department.
The gunman has been identified as 39-year-old Danny Cazares. Per court records, Cazares was out on bond with three charges: one related to possession of a weapon as a felon, one for criminal mischief, and one for trespassing.
The murder victim has been identified as 28-year-old Gabriel Moriones Vargas. Both he and his wife were visiting from New York.
A witness of the shooting gave her side of the story:
Meanwhile, a woman who was inside the restaurant at the time of the shooting spoke with ABC13 Thursday night and said she heard about four or five gunshots.
"Everyone started to run in one direction of the restaurant," said Elaine Khalil. "There was panic and pandemonium."
She said those inside immediately started running.
"It was a weeknight near closing so it was half full," said Khalil. "We just followed the crowd into this small room that kind of curved around. Everyone was trying to get around. Another person was yelling to shut the door. Then the wait staff, they were very composed, they led us to a back staircase where everyone ran out."
A statement was issued by the Downtown Aquarium:
Our deepest condolences go out to the victims and their families during this difficult time. This was an isolated incident and a senseless tragedy by someone who appears to have been facing personal conflicts. If you know of someone struggling with mental health or suicidal thoughts, please contact the National Suicide Prevention Lifeline at 1-800-273-TALK (8255).