“The Norwegian Civil Security Clearance Authority informs me that the reason that I will not receive a renewed security clearance is that my wife is a Chinese citizen and resides in China, where I support her financially,” Jon Nicolaisen said in a statement from the bank.
“At the same time, they have determined that there are no circumstances regarding me personally that give rise to doubt about my suitability for obtaining a security clearance, but that this does not carry sufficient weight. I have now had to take the consequences of this,” he added.
As deputy governor, Nicolaisen had special responsibility for following up the bank's task of managing Norway's sovereign wealth fund, the world's biggest valued at more than 1 trillion euros.
According to the bank, Nicolaisen and his wife have been married since 2010.
He was appointed to the job in 2014, and his position was renewed in April 2020.
Diplomatic relations between Norway and China also went into a long deep freeze after the Nobel Peace Prize was awarded to Chinese dissident Liu Xiaobo in 2010. Ties were normalised in 2017.