The man in all three cases is described as white, in his late 20s and about 6 feet tall with a medium build, Lynnwood police spokeswoman Shannon Sessions said Monday.
The first incident was reported about 2 p.m. Dec. 19. A man walked into the Prime Pacific Bank at 2502 196th St. SW and asked bank employees weird questions, Sessions said.
The man wore a black or dark gray coat and drove an older blue, four-door Toyota Corolla.
On Dec. 21, a man entered the same bank armed with a stun gun. He passed a note to the teller and ran away with cash.
The robber wore a dark hooded sweatshirt with the word "RAGE" printed on front. He also wore a ski mask, sunglasses, black gloves, blue jeans and tennis shoes.
The most recent robbery happened about 11:30 a.m. Saturday at the Chase Bank at 4001 Alderwood Mall Blvd.
The robber passed a note to the teller claiming that he had a weapon, Sessions said. He ran away with the money.
That robber had black hair. He wore a black shirt and jacket with a fedora-style hat.
No injuries were reported in any of the incidents.
Anyone with information should call 425-670-5617.
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