Los Angeles County Sheriff's Department officials say the suspicious package left behind at the Union Bank in Norwalk was a "hoax device."
Authorities cleared the scene about 1:40 p.m. Monday. A robbery had been reported about 10:30 a.m. at Union Bank at 12221 Norwalk Blvd., according to the Sheriff's Department.
Shortly after, authorities discovered a suspicious package at the bank.
They said the bank robber, described as wearing a plaid shirt and gray hooded sweatshirt, entered the bank and placed the device on the bank teller's counter.
The robber then handed a note to the teller demanding money. He left the device behind before fleeing the scene.
Authorities evacuated the building and neighboring businesses, the Sheriff's Department said.