President Barack Obama's half brother, Malik Obama, will be attending Wednesday night's third presidential debate as a guest of Donald Trump.

Malik Obama, a Muslim with both Kenyan and US citizenship, has previously expressed his support for the Republican nominee.

“I’m excited to be at the debate. Trump can make America great again,” Malik Obama told the New York Post.

He also backed Mr Trump over allegations from several women that the presidential candidate had sexually assaulted them in the past.

“I don’t believe them,” he said. “Why didn’t they come forward before?”