The Mexican government announced Thursday that it will send two ships to protest-hit Cuba with food and medical aid, in an apparent show of support for the communist-run island.

Mexican navy ships will leave from the port of Veracruz on Sunday, the Foreign Affairs Ministry said. The supplies aboard include oxygen tanks, needles and syringes, and basic food items like rice and beans. The aid “is in line with the Mexican government’s policy of international solidarity,” the ministry said.

Leftist President Lopez Obrador has criticized the long-standing U.S. embargo of the Caribbean island and blamed the measure for fomenting the biggest unrest to hit Cuba in decades.

Also on Thursday, the U.S. government announced sanctions against a Cuban security minister and a special forces unit for their alleged role in the crackdown on the anti-government protests that began earlier this month.

The protests began earlier this month, as thousands of Cubans across the country took to the streets to protest the food shortages and high prices that have afflicted the country during the pandemic.

The Cuban government has blamed the protests mostly on what it calls U.S.-financed “counter-revolutionaries” exploiting economic hardship caused by U.S. sanctions.

Latin American governments have split along ideological lines over the protests in Cuba. Mexico has sided with Cuba, while Chile and Peru have urged the communist government to allow pro-democracy protests.

While Mexico’s aid to Cuba includes oxygen tanks, oxygen shortages have been reported in several locations in Mexico, most recently in Juchitán, Oaxaca.

With reports from Reuters, AP