Two Russian military planes landed at Venezuela's main airport on the weekend, reportedly carrying dozens of troops and large amounts of equipment.
Russia's Sputnik news agency reported that the planes were sent to fulfill technical military contracts.
Javier Mayorca, a Venezuelan journalist, wrote on Twitter that he saw about 100 troops and 35 tonnes of equipment offloaded from the planes on Saturday.
It comes three months after the two nations held joint military exercises.