A male suspect entered the Wells Fargo Bank at 191 Branham Lane near Snell Avenue shortly after 1 p.m., threatened a teller and demanded money, police spokesman Sgt. Jason Dwyer said.
The suspect then fled the bank with an undisclosed amount of cash, Dwyer said.
San Jose police have sent officers from the department's MERGE, canine and robbery units to the area to search for the suspect, Dwyer said.