Jordan, which has intensified military drills along its border with Syria, announced 10 days ago it had foiled a large smuggling operation.
A recent intelligence report by ImageSat International (ISI) based on satellite images revealed details about an attack in Syria attributed to Israel in early March.
Leaders in the Arab world have addressed a need to step up efforts to dealing with Syria.
The way was paved last year through meetings between the security chiefs of the countries, whose rapprochement had seemed unthinkable.