West Covina bank frequent target

WEST COVINA -- Four the third time in less than four months, a local Washington Mutual branch has experienced an unauthorized withdrawal.
A robbery was reported Friday afternoon at the branch located at 100 N. Citrus Street, West Covina police said.
The suspects, described initially only as a Latino man estimated to be in his 20s, handed a teller a note that threatened he had a gun and fled with an undisclosed amount of cash.
On Oct. 2 and July 21, similar visits were paid to the bank by robbers bearing a similar suspect description.
In the July heist, police said the robber also used a note that mentioned he was armed.
Few details were available Saturday regarding the October crime.
Bank security expert Mike Alerich points out that a bank robbery perpetrated by similar suspect was also reported Monday at a Washington Mutual branch in Glendale.
Officials have yet to confirm we're dealing with a serial robber here, however pictures of the robbers in the earlier robberies have been made available by the FBI.
What do you think?

NOTE: The FBI photos incorrectly identify the city of the WAMU branch as Covina. It is West Covina.