(CNN) A 40-year-old Mexican migrant died in custody of the US Customs and Border Protection on Monday, the fourth known person to die in its custody in recent months.

The man died at Las Palmas Medical Center in El Paso, Texas, after being apprehended by CBP agents for illegal re-entry early Sunday morning, according to a CBP news release.

Hours after being apprehended, the unnamed man was evaluated by medical personnel at the Border Patrol's processing facility near Paso Del Norte Port of Entry.

CBP said the man was transported to the medical center after being diagnosed with flu-like symptoms, liver failure and renal failure. He died later that day.

"CBP remains committed to ensuring the safe, humane and dignified treatment of those within the care of our custody," said Andrew Meehan, the assistant commissioner for public affairs at the CBP, in a statement.

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