Two men were detained at Dahr al-Baidar; the prime minister wants every person involved identified.
The Constitutional Council threw out a challenge, and courts have begun applying the law.
Two groups totalling about 265 inmates have already been transferred under February's agreement.
Hezbollah admits the truckload of explosives stopped at Dahr al-Baidar is its own and demands it back; Washington says returning it is "out of the question".
Gunmen linked to Hezbollah briefly encircled investigators raiding a medicines warehouse in Galerie Semaan; they withdrew when the army arrived.
Ali Kayali, wanted by Syria over the 2013 Baniyas killings, was seized in Mansouriyeh; prosecutors want to know how he left the country.
