An Afghan security chief and a journalist were killed and three Americans wounded Thursday when a gunman opened fire on a high-level security meeting attended by top US commander General Scott Miller, officials said.

At least 17 people were killed and dozens more wounded, most of them teenagers, after an attack on a college in Russian-annexed Crimea on Wednesday, with conflicting versions referring to a lone shooter and a bomb.

A serial killer of minor girls was executed at a jail in Lahore on Wednesday after he was convicted and sentenced to death by an anti-terrorism court for raping and murdering a seven-year-old girl, in an incident that sparked outrage and violent protests in Pakistan early this year.

A man who faked his own death to cheat on his insurance turned himself in when he discovered his wife had killed herself and their two young children because of his disappearance.

A suspect identified by Turkey in the disappearance of Saudi journalist Jamal Khashoggi was a frequent companion of the kingdom's powerful Crown Prince Mohammed bin Salman, The New York Times has reported.

The number of Rohingya refugees has reached nearly one million, with young girls sold into forced labour in Bangladesh accounting for the largest group of trafficking victims, according to a UN agency.

Anyone entering the US illegally would be arrested, detained and then deported back, President Donald Trump has warned as he threatened three Central American nations to halt a migrant caravan from heading to America or lose millions of dollars in foreign aid.

Saudi Arabia and Turkey should "reveal everything" they know about Jamal Khashoggi's disappearance, a top UN human rights official has said while demanding a "thorough and impartial" probe into the whereabouts of the dissident Saudi journalist.