Deutsche Bank AG is suing former employee Lee Zhang for $6.3 million over the transfer of funds to a bank account in Shenzhen in 2001, according to Hong Kong court documents.

Zhang is currently a senior executive at Industrial and Commercial Bank of China.

According to a filing with Hong Kong's Court of First Instance that was dated on Friday, Deutsche Bank said Zhang breached his contract by transferring $3.9 million to the bank account of a company called Harperskille Ltd. Deutsche Bank said it wants that sum, plus interest of more than $2.3 million.