(Adds comment from Australian Federal Police)
Nov 18 (Reuters) - National Australia Bank NAB.AX said a threat against its branches was deemed a hoax by police and it would reopen all 600 of it branches on Thursday.
Australia's second-biggest lender shut all its branches and offices by Wednesday afternoon, citing a "physical security threat", but did not give further details.
Queensland police told The Australian newspaper that a number of NAB branches in the state reported bomb threats.
"The latest advice from State and Federal police is that the threat is not credible and has been deemed a hoax," NAB said in a statement on its website.
It is safe to return to all NAB locations from Thursday morning, the bank added.
A spokeswoman for the Australian Federal Police said NAB was provided with support, but declined to give further details.