Samson Obama, half-brother of US President Barack Obama was refused an entry visa to Britain after lying to police officers about an accusation of sexual assault, media reported on Sunday.
The deception occurred in November when Samson Obama, who lives in Kenya, was in Britain staying with his mother, who lives in Berkshire, The Mail on Sunday claimed.
He was questioned by police about the assault - which he denied - but during the investigation he used a false name and he later received a police caution.
When he applied for another visa, hoping to visit Britain last week, he was refused.
The US President had given his half-brother a personal tour of the White House in January when he attended the historic inauguration.
41-year-old Samson and Barack, 47, are sons of Barack Obama Sr, a former goat-herder from Kenya. Samson's mother Kezia was Barack Sr's first wife in Kenya. The President's mother is Barack Sr's second wife Ann Denham, a white American from Kansas.
Barack Sr left America in 1965 with his third wife to return to Africa where he rekindled his relationship with Kezia and Samson was born. Barack Sr was killed in a car crash when the President was 21.