Three members of MS-13 and a convicted child sex predator were arrested on Monday in the Rio Grande Valley (RGV) Sector, Customs and Border Protection announced. 

One of the arrestees, a Salvadoran national whose records showed she was a member of MS-13, was displaying COVID-19 symptoms and tested positive. 

Another Salvadoran National was arrested by McAllen Border Patrol Station agents near Mission, Texas, and admitted that he was a member of MS-13. 

Later in the day, Kingsville Border Patrol Station agents arrested six migrants near Sarita, Texas. One of them was a Salvadoran national who was an MS-13 member. 

A member of the Mara MS 13 street gang gestures while singing the national anthem during an event sponsored by the country's Catholic church at a park in San Vicente April 5, 2013. Members of the country's two most powerful gangs MS-13 and 18th Street gang (Mara 18) gathered at a park after imprisoned representatives of the gang visited a nearby high security jail to pledge fellow members of the gangs not to commit violent acts. The pledge is part of a truce between the two gangs which was signed in March 2012 in conjunction with the church, civic organizations and government officials in an effort to reduce violent crimes in the country, according to local media. REUTERS/Ulises Rodriguez (EL SALVADOR - Tags: CRIME LAW CIVIL UNREST) - RTXYA4D

A member of MS-13 makes his gang's sign. (Reuters)

Another Salvadoran national was arrested near Roma, Texas, who was convicted of aggravated sexual assault of a child 27 years ago in New Jersey. He was deported from the United States after that arrest in 1994. 

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Separately in Arizona, two other child sex predators were arrested in recent days.

A border patrol agent guards a gap in the Mexico-U.S. border fence in the Rio Grande Valley sector, near McAllen, Texas, U.S., April 5, 2018.

A border patrol agent guards a gap in the Mexico-U.S. border fence in the Rio Grande Valley sector, near McAllen, Texas, U.S., April 5, 2018. (REUTERS/Loren Elliott)

Jose Vazquez-Ramirez, a Mexican national who was convicted in California of unlawful sexual intercourse with a minor under 16, was arrested by Nogales Station agents on Wednesday. 

On Sunday, Mexican national Erasmo Galan-Palacios was arrested near Naco, Arizona. He was convicted of lewd or lascivious acts with a child under 14 in California in 2005, according to the CBP. 

The arrests come as record numbers of migrants are apprehended at the southern border. 

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More than 1.7 million migrants were detained at the border in fiscal year 2021, which ended in September. About half a million migrants were arrested between October and December of last year.