US President Donald Trump reportedly asked the then-FBI director James Comey to drop an investigation into the President's former national security advisor, Michael Flynn, the New York Times says.

The newspaper claims the information is contained in a memo written by Mr Comey shortly after a meeting with the President in the Oval Office in February, the day after Mr Flynn resigned.

According to the memo, Mr Trump told the FBI director: "I hope you can see your way clear to letting this go, to letting Flynn go. He is a good guy."

In a statement, the White House denied the version of events in the memo saying Mr Trump has never asked Mr Comey or anyone else to end any investigation, including any investigation involving General Flynn. 

Mr Comey was sacked as FBI Director last week.

The White House has issued a statement rejecting the New York Times' claims.

The statement said that while Mr Trump "has repeatedly expressed his view that General Flynn is a decent man who served and protected our country, the President has never asked Mr Comey or anyone else to end any investigation, including any investigation involving General Flynn". 

It continued: "The President has the utmost respect for our law enforcement agencies, and all investigations."

This is not a truthful or accurate portrayal of the conversation between the President and Mr Comey.

A White House spokesperson then referred reporters to the testimony the Acting FBI Director Andrew McCabe gave before the Senate Intelligence Committee last week when he confirmed that nobody from the White House had been in touch with him about the investigation.

Mr McCabe told the committee: "There has been no effort to impede our investigation to date."

An associate of Mr Comey's who has seen the memo told Reuters that the details as reported by the New York Times are accurate.

The latest claims that Mr Trump shared classified information with Russian officials.