Riyadh: Saudi Arabia on Friday called on its citizens fighting abroad to return to the kingdom in 15 days or face imprisonment.
The ultimatum was an extension of a month-long deadline given to Saudis fighting outside the country to return home, the interior ministry said.
Those failing to comply face penalties of three to 20 years in prison.
The kingdomโs authorities want to deter Saudis from joining rebels in Syria and posing a security risk once they return home.
The statement, carried by official Saudi Press Agency, also designated as terrorist groups such as Al Qaidaโs branches in Yemen and Iraq, the Syrian Al Nusra Front, Saudi Hezbollah, Yemenโs Al Houthis, and the Islamic State of Iraq and the Levant (Isil).
On Thursday, Saudi state television for the first time broadcast the โconfessionsโ of a jihadist who returned from Syria, as the kingdom distanced itself from Islamist radicals in that countryโs conflict.
Sulaiman Al Subaie, 25, who grew popular in his homeland for his posts on video-sharing app Keek, reportedly joined the most radical group fighting in Syria, the Isil, last August.
โThe situation in Syria is not as portrayed in the media,โ Al Subaie said in a rare interview aired on Saudi television late Wednesday.
โWhat is amazing is that Saudis are killing fellow Saudis in the fighting between Isil and Al Nusra Front,โ the Al Qaida franchise in Syria.
Isil, disavowed by Al Qaida chief Ayman Al Zawahiri, has been accused by rebels battling Syrian President Bashar Al Assadโs troops of seeking to consolidate power rather than fight the regime, and even of serving the regimeโs interests.
Fierce clashes between Isil and opposition fighters broke out in early January, after accusations that the radical group was abusing both civilians and rival rebel forces.
The fighting has left hundreds dead and created openings for regime advances in some areas.
Al Subaie said in his โconfessionsโ that the death of his brother, a jihadist, as well as โpictures of dead Syrian childrenโ had prompted him to join the war.
โI went to Qatar, from where I travelled to Turkeyโ before being led into Syria with the help of a smuggler.
He wanted to join Al Nusra Front but โupon my arrival, I was told that I have now become a member of Isil,โ he said.
Al Subaie decided to quit the group after realising that his Twitter account, followed by thousands in Saudi Arabia, was being used to broadcast โmessages incitingโ violence against rulers and clerics in Saudi Arabia.
He fled back to Turkey and returned to the kingdom, where he is being held.
There are no official figures on the numbers of Saudis who have joined jihadist ranks in Syria, but they are estimated at several hundred.
The conservative kingdom has been a key backer of the three-year revolt against Al Assadโs regime, which is dominated by the Alawite offshoot of Shiite Islam.
But King Abdullah last month decreed jail terms of up to 20 years for citizens who travel to fight abroad, as the country struggles to deter young Saudis from becoming jihadists.
In 2011, Riyadh set up specialised terrorism courts to try dozens of Saudis and foreigners accused of belonging to Al Qaida or of being involved in a wave of bloody attacks that swept the country from 2003.
The interior ministry urged those wanting to โrepentโ to turn themselves in at Saudi embassies, saying they would be repatriated and reunited with their families.
But Al Subaieโs fate was not announced.
