(CNN) -- A man authorities call the "Golden Years Bandit" has struck again, the FBI said Friday.
Investigators are searching for a grey-haired man in his 50s or 60s who held up a bank in San Gabriel, California, June 26, FBI spokeswoman Laura Eimiller said.
"He threatened to shoot the teller if she did not move fast," she said.
The suspect alluded to having a partner and a gun, ordered the teller "not to say a word" and demanded cash in $100, $50 and $20 denominations, Eimiller said. She did not say how much authorities believe the man stole.
The FBI said authorities believe the mustache-wearing man used the same technique in two previous California bank robberies, one in January in Alhambra and one in Rosemead in March.