El Salvador President Nayib Bukele said it's partnership with the U.S. on transferring illegal immigrants linked to gang activity to prison in El Salvador helps both countries crack down on crime.

Under Bukele, the homicide rate has dropped to its lowest point since the civil war in El Salvador in 1992.

"The first 238 members of the Venezuelan criminal organization, Tren de Aragua, arrived in our country. They were immediately transferred to CECOT, the Terrorism Confinement Center, for a period of one year (renewable). The United States will pay a very low fee for them, but a high one for us," Bukele wrote on X.

"Over time, these actions, combined with the production already being generated by more than 40,000 inmates engaged in various workshops and labor under the Zero Idleness program, will help make our prison system self-sustainable. As of today, it costs $200 million per year," he added.

Bukele said the partnership is helping dismantle the MS-13 gang.

"On this occasion, the U.S. has also sent us 23 MS-13 members wanted by Salvadoran justice, including two ringleaders. One of them is a member of the criminal organization’s highest structure. This will help us finalize intelligence gathering and go after the last remnants of MS-13, including its former and new members, money, weapons, drugs, hideouts, collaborators, and sponsors," he said.

"As always, we continue advancing in the fight against organized crime. But this time, we are also helping our allies, making our prison system self-sustainable, and obtaining vital intelligence to make our country an even safer place. All in a single action. May God bless El Salvador, and may God bless the United States," he added.

U.S. Secretary of State Marco Rubio responded to Bukele's post on X.

"Thank you for your assistance and friendship, President Bukele," he wrote.