The police are on the verge of wrapping up investigations into the leak of a letter penned to the CIA some 72 hours after a police report was lodged.

Speaking to reporters in Kuala Lumpur this afternoon, inspector-general of police Mohamad Fuzi Harun said the investigation papers would be submitted to the DPP tomorrow for further action.

On Tuesday, former MEIO director-general Hasanah Abdul Hamid filed a police report regarding the letter.

She urged the police to investigate how the document was leaked, claiming that the incident had affected the morale of her officers.