The father of US fugitive Edward Snowden has said the FBI asked him to travel to Moscow and see his son, but adds that he wants more details.

Lon Snowden said he had been asked several weeks ago about Edward, who is sought by the US for leaking details of electronic surveillance programmes.

However, he wants to know the FBI's intentions, he told Russian state TV. ...

Lon Snowden said in the interview he believes his son would not get a fair trial in America and, if he were in his son's place, he would stay in Russia.

He described his son as a "true patriot" who had "made America a more democratic country" by revealing secret details of the US National Security Agency's surveillance programmes.