Mexican authorities rescued 31 migrants abducted near the shared border with the U.S., officials confirmed on Wednesday.

In a post on X, formerly Twitter, a spokesperson for the Mexican president’s office announced the 31 migrants were rescued after they were abducted on Dec. 30, 2023. The abduction took place in Tamaulipas.

Jesús Ramírez Cuevas, the spokesperson, thanked the “coordinated effort” of the Tamaulipas government, the state attorney general’s office, the defense ministry, the national guard and the secretary of security and citizen protection for the rescue.

“They are already in the hands of the authorities and are undergoing the corresponding medical examination,” the spokesperson wrote on X, attaching several photos, including one of an ambulance and another of several migrants, including one holding a stuffed animal toy.  

Mexican Interior Minister Luisa Alcalde on Wednesday also celebrated the rescue of the migrants in a post on X, writing, “Governor Américo Villarreal has just informed us that the 31 migrants kidnapped in Tamaulipas were rescued safely.”

“Thanks to the State authorities, the national guard and the armed forces,” she added.

Federal Security Secretary Rosa Icela Rodríguez said armed and masked men stopped the bus traveling on a highway that connects the border cities of Reynosa and Matamoros, according to The Associated Press wire service. She said the migrants were from Ecuador, Colombia, Venezuela, Honduras and Mexico. Four Colombians were among the abducted, the country’s president said.

Officials tracked migrants’ cell phones, reviewed surveillance video footage from the bus and scanned the area by helicopter in searching for the abductees, The AP reported.