A New Mexico woman has been arrested on suspicion of first-degree murder and tampering with evidence in the January death of her newborn son, according to authorities.

Artesia police said Alexee Trevizo, 19, was taken into custody Wednesday after a lengthy investigation.

Treviso gave birth Jan. 27 in an Artesia hospital bathroom before she allegedly put the infant in a trash can, investigators said.

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They said Trevizo had gone to the hospital’s emergency room for back pains and was told that lab tests showed she was pregnant and in labor.

Police said Trevizo allegedly locked herself in a bathroom, where she gave birth to a baby boy, tied him up in a trash bag and hid him underneath trash in the can.

Trevizo left the scene. By the time the baby was found, authorities said he had died from lack of oxygen.

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An autopsy stated the cause of death as a homicide.

Police presented the case to the district attorney’s office before a criminal complaint was issued and Trevizo was arrested.

It was unclear if Trevizo has a lawyer yet who can speak on her behalf.

On Monday, a 19-year-old woman was sentenced to a 16-year prison term after being convicted of throwing her newborn baby into an outdoor trash receptacle in January 2020 in Hobbs, New Mexico. In that case, the child survived.

Title 42, the Trump-era policy used to manage the border crisis by allowing the swift expulsion of illegal migrants from the U.S., reached its expiration date Thursday.

In anticipation of that expiration, tens of thousands of migrants began journeying through Mexico in hopes of finding asylum in the United States. 

The unfolding crisis is quickly turning into one of the largest migrant surges America's southern border has ever seen.

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On Tuesday, President Biden said he anticipated the crisis at the border will be "chaotic for a while."

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Customs and Border Protection (CBP) recorded about 10,000 migrant encounters daily in the days leading up to Title 42's expiration, but this number is expected to increase. 

The chief of Border Patrol released a memo that revealed agents would begin releasing migrants into America without a court date if the border becomes overwhelmed.

Fox News' Adam Shaw and Bill Melugin contributed to this report.