Border Patrol agents in the Del Rio Sector have rescued two 5-year-old girls attempting to cross the border with no accompanying adults in two separate incidents in two days — the latest instance of children being abandoned and left to fend for themselves at the border.

Border Patrol agents on Tuesday encountered a 5-year-old Guatemalan girl who told agents that she crossed the perilous Rio Grande Valley river by herself.

BORDER CRISIS: VIDEO SHOWS SMUGGLER ABANDON 7-YEAR-OLD MIGRANT GIRL

On Wednesday, Chief Patrol Agent Jason Owns announced that a 5-year-old Honduran girl had been encountered along with three older children, the oldest of whom was 16 years old.

"Another 5-year-old female child found, making this the second in two days," he said. "This time a 5-year-old Honduran female was found with three other children, the oldest being 16."

"Where are the parents?" he asked.

It is the latest in a number of incidents of children being found abandoned by relatives or smugglers at the border. Unaccompanied children are not being expelled via Title 42 public health protections and are being moved quickly into Health and Human Services custody before being united with a sponsor, normally a guardian or parent already in the country.

BORDER PATROL RELEASES VIDEO OF 5-YEAR-OLD MIGRANT GIRL ABANDONED NEAR WALL 

In October, Customs and Border Protection released footage showing a 7-year-old from El Salvador being brought over the 30-foot border wall in El Centro Sector by a smuggler on a rope ladder. Video shows the child being dropped off and moving away from the smuggler.

Agents in September rescued two small children abandoned along the Rio Grande River, including a 3-month-old in an infant carrier.

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In June, Border Patrol released video of a 5-year-old migrant girl wandering alone at the border after being abandoned near the end of the wall.

Fox News' Bill Melugin contributed to this report.