"Royal air force jet fighters today destroyed a number of vehicles that attempted to cross into Jordan from Syria," the Jordanian army said in a brief statement on Wednesday, without elaborating.
An army spokesman declined to give any more details, while government officials were not immediately available for comment.
Jordan's border guards in recent weeks clashed with and arrested several people allegedly attempting to cross into the kingdom from Syria, where a conflict has been raging for more than three years, AFP reported.
The government in Damascus has regularly accused Jordan of assisting rebels fighting its forces.
Amman denies the accusations, saying it has tightened control of the border and jailed dozens convicted of allegedly trying to cross the frontier illegally.
Jordan, home to more than 500,000 Syrian refugees, says arms smuggling across the border with Syria has risen by 300 percent in the past year.