Mexico City, Mexico - President Claudia Sheinbaum's government in Mexico is stepping up its investigation into the deaths of 17 Mexican citizens in US Immigration and Customs Enforcement custody.

Mexico is doubling down on its efforts to specifically identify the individuals responsible for the deaths of 17 of its citizens during encounters with ICE.

To date, the Ministry of Foreign Affairs has filed 20 complaints with various US authorities, but have only received a response from four. More than $24,000 has been spent repatriating the bodies.

These statistics were confirmed by Foreign Affairs Undersecretary Roberto Velasco on Wednesday, who maintains that Mexico City is continuing to demand that the Department of Justice open a full investigation.

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"We want an investigation to be carried out and, if any member of ICE, or any private contractor responsible for running or overseeing a detention center, was responsible, then action should be taken," said Sheinbaum, per El País. "There are simply too many cases."

Four of the 17 Mexican migrant deaths recorded so-far during the Trump administration have occurred specifically within the Adelanto Immigration Detention Center in California, triggering allegations of negligence and mistreatment.

Sheinbaum's government has filed complaints against GEO Group, the private company which operates the camp, as well as numerous other organizations linked to ICE.

Mexico City has also raised human rights concerns with the United Nations, which Velasco says has confirmed it will "monitor conditions in detention centers and the human rights of migrants."

Meanwhile, Sheinbaum on Tuesday slammed the US for intervening in Mexican politics by revoking a visa held by Andrés Manuel López Beltrán, the son of former President Andrés Manuel López Obrador.

The US revoked the visa over accusations that he was involved in criminal activity, notably, fuel smuggling. Sheinbaum demanded to see evidence of his wrongdoing.

This is not the first time that Sheinbaum has been angered by the Trump administration and accused it of interfering in Mexico's domestic affairs.

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"If there is a crime to prosecute, there are mechanisms for them to give us the information," Sheinbaum told reporters during a press conference on Tuesday.

"Is there a crime? Then show the crime. There always has to be evidence. Otherwise, it is a matter of interference," she said.