Four Yemenis freed from Guantanamo arrive in Saudi Arabia

The four were among 59 prisoners who were still being held in the controversial detention centre in Cuba.

In the Saudi capital, an AFP reporter saw the four prisoners after they landed at a terminal normally reserved for royals at the Riyadh international airport.

Prisoners and family members wept as they saw each other for the first time in years.

One of the released inmates, Salim Ahmed bin Kanad, told reporters he felt "born again" after seeing his relatives.

Another, Mohammed Bawazir, said he hoped to move on and forget the past.

"I want to give back to my family the 15 years I lost," he said.

Officials identified the other former prisoners as Mohammed Rajab Abu Ghanim and Abdullah Yahya al-Shalabi.

On Tuesday, US President-elect Donald Trump tweeted: "There should be no further releases from Gitmo. These are extremely dangerous people and should not be allowed back onto the battlefield."

Hours later, outgoing President Barack Obama's spokesman, Josh Earnest, said he would expect "additional transfers" before Obama hands power to Trump on January 20.

Many of the others are in legal limbo - not charged but deemed too dangerous to release.

The four Yemenis who arrived Thursday will live in the kingdom, where they will take part in a rehabilitation and de-radicalisation programme, the interior ministry said in a statement.

One prisoner was welcomed by 21 relatives, including children, but only a handful greeted the others.

A lone woman waited for one of the inmates.

Reporters were kept in the terminal and could not see what type of aircraft had transported them.

Obama came to office eight years ago vowing to shutter the Guantanamo facility because, he said, detention without trial did not reflect American values.

But he has run up against political and legal hurdles, Pentagon foot-dragging and stubborn Republican opposition in Congress.

With Guantanamo's closure blocked, Obama's White House has focused on whittling down the number of inmates.

Before Thursday's transfer, around 20 of the remaining prisoners had been cleared for removal. But finding countries to take them has often proven time-consuming.

Only a handful of those who remain have started moving through military tribunals, including the alleged plotters of the 9/11 attacks.

Many of the others are in legal limbo - not charged but deemed too dangerous to release.

Because the Guantanamo Bay naval base is on Cuban and not US soil, it is not subject to the same federal laws and legal processes as the United States.