US president Barack Obama has arrived in Kenya on the first visit to his ancestral home as serving US president.

During his two-day visit Mr Obama will hold talks with Kenyan President Uhuru Kenyatta and other top officials, says BBC.

Mr Obama earlier told the BBC he would deliver a "blunt message" to African leaders about gay rights and discrimination.

He also said the trip to Kenya and then Ethiopia would show US commitment to fighting terror in East Africa.

President Obama's Air Force One touched down at Nairobi's international airport shortly before 20:10 local time ( 17:10 GMT).

He was greeted by President Kenyatta with a handshake and embrace.

Ahead of Mr Obama's arrival, the Kenyan capital was in lockdown with many streets closed and people opting to stay at home.

The US president will hold talks on trade and investment, and also security and counter-terrorism.

Mr Obama will also become the first US leader to address the African Union when he travels on to Ethiopia on Sunday.

His views on gay rights were explained in a wide-ranging interview with the BBC's North America editor Jon Sopel before he left Washington.