According to the SANA news agency, the terrorists were trying to reach by car Al-Halba desert located in about 70 kilometres (43.5 miles) south of Palmyra.
The Syrian servicemen destroyed the terrorists' vehicle. During the searches of the car rifles and machine guns have been found along with the bodies of two terrorists, the news outlet reported.
Syria has been in a state of civil war since 2011 with the government forces fighting against numerous opposition groups and militant and terrorist organizations. The US At Tanf military base has been used by Washington to train and equip Syrian opposition forces. The United States occupies a 55-kilometre zone around its military base.