The Trump administration imposed sanctions this week on five entities and eight individuals it accuses of procuring military equipment for Cuba's Ministry of the Revolutionary Armed Forces.
The action was announced by the State Department, according to the Washington Policy Review, which tracks federal policy announcements. The department did not immediately release further detail on the network's operations or the nationalities of those designated.
Cuba's Ministry of the Revolutionary Armed Forces, known by its Spanish acronym MINFAR, oversees the country's military and controls a substantial portion of its economy through affiliated business conglomerates.
Sanctions of this type typically freeze any US-held assets of those designated and bar American individuals and companies from transacting with them.
The measure is the latest in a series of restrictions the administration has placed on Cuba. Successive US governments have maintained an economic embargo on the country since 1962, with enforcement tightening and loosening according to administration policy.
The State Department has not said whether additional designations are expected.