The photograph of a mystery woman may be the key to the case.
"He was wearing a hat, and his face is not fully visible, but with the picture that he left behind that we're releasing and the pictures from the bank cameras, I think that someone out there might be able to identify him for us," says Tom Lorenz of the Glendale Police Department.
The suspect struck the East West Bank in Glendale just before 3 p.m. Wednesday.
Investigators say on the surveillance video, the man who was carrying a blue plastic folder appeared to have been hesitant or nervous about committing the crime but suddenly decided to make his move.
"When he did get inside the bank, he did approach the teller, he demanded money, during that time, he was fumbling with the blue folder that he had in his possession," describes Lorenz.
"The teller thought he might have a gun," he added.
No weapon was seen, but the suspect became so anxious, that he grabbed the money from the teller's hand and rushed out the door, leaving the mysterious picture behind.
Authorities don't know if the woman in the picture is the suspect's wife, sister, or just a friend.
The man is described as 5 feet 4 inches tall, 160 pounds, 50 to 60 years old with white pigmentation or discoloration around his mouth.
Given his demeanor, age and the woman's mysterious photo, investigators are wondering what desperation led him to commit the crime.
Anonymous tips may be provided to Glendale Crime Stoppers at 818-507-7867.