- Video: Murder suspect caught on surveillance camera
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The suspect enters the store brandishing a gun and forces Tran to go to the cash register. Tran resists, the two struggle, and then disappear from the camera view.
However, the audio records the sounds of a scuffle followed by a single gunshot.
A short time later, the suspect appears back on camera carrying a red box out of the store.
"We don't know what the connection to the red box is, but he was holding what appeared to be a red box under his arm as he walked out," said Sgt. Alex Irizabal from the Downey Police Department.
Tran was found dead at the scene of a single gunshot wound to the head.
Police are still trying to determine if any cash was taken, but they strongly suspect that was the motive.
"We don't have any information that Mr. Tran was targeted for anything," Irizabal said.
"It's just, apparently, the suspect saw an opportunity and unfortunately for Mr. Tran, he took that opportunity."
Witnesses told police they saw a man running from the scene, but no one was able to provide a description.
From the tape, police said the suspect is about 5 feet, 6 inches tall, and was wearing a dark colored V-neck sweater, blue jeans, and a cap with a distinctive S.F. logo.
"The clothing is something that we're keying on," Irizabal said.
"We really haven't seen an S and an F in that configuration before, so we're hoping that that might lead us to something."
Anyone with information about the crime is asked to call Downy police at (562) 904-2308.