The Syrian troopers detained dozens of foreign officers in the restive al-Qusseir region, sources said on Tuesday, adding that most of the detainees were from France, Britain, Belgium, the Netherlands and Qatar.
(Ahlul Bayt News Agency) - Assim Qansou, a representative of the socialist party in Lebanon's parliament, told the Lebanese al-Nashrah newspaper that during the battle in al-Qusseir city, the Syrian army has arrested tens of French, British, Belgian, Dutch and Qatari officers.
The EU's anti-terror chief said in April that hundreds of Europeans are now fighting with rebel forces in Syria against Bashar al-Assad's government.
Gilles de Kerchove estimated the number in Syria at about 500.
Intelligence agencies are concerned some could join groups linked to al-Qaeda and later return to Europe to launch terrorist attacks.
The UK, Ireland and France are among the EU countries estimated to have the highest numbers of fighters in Syria.
"Not all of them are radical when they leave, but most likely many of them will be radicalized there, will be trained," de Kerchove said.
"And as we've seen this might lead to a serious threat when they get back."
Across Europe, intelligence agencies have stepped up investigations, says the BBC's Europe correspondent Duncan Crawford.
In Britain and Belgium they have increased efforts to track how people are recruited.
In the Netherlands, officials have raised the terror threat level there to "substantial" - partly over concerns about radicalized citizens returning from Syria.
The Syrian army announced on Tuesday that it found an Israeli military vehicle during its wide-scale attack in the central city of al-Qusseir.
According to the report, the vehicle was found along with tapping and jamming devices in al-Qusseir where the Syrian army has taken full control over the entire Eastern part of the strategic city near the borders with Lebanon.
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