Martinez, while trying to grab Valeria, got swept away due to the water current.
As the Mexican border office was closed on Sundays, the family then set out on foot along the river, until they reached a point where they tried to cross.
According to the US Customs and Border Protection (CBP), a total of 283 migrant-crossing deaths were recorded at the border in 2018, but these figures may provide an incomplete picture. After asking his daughter to stay put on the river bank, he swam back to fetch his wife but unfortunately the daughter threw herself into the waters. "That is why they made a decision to cross", she said, adding that their original intention was to hand themselves over to U.S. immigration authorities.
The search for Martinez and his daughter was suspended Sunday due to darkness, and their bodies were discovered the next morning near Matamoros, Mexico, across from Brownsville, Texas, several hundred yards from where they had tried to cross and just half a mile from an worldwide bridge.
Tamaulipas immigration and civil defence officials have toured shelters beginning weeks ago to warn against attempting to cross the river, said to be swollen with water released from dams for irrigation.
In the municipality of San Martin in El Salvador, his mother Rosa Ramirez wept as she held her granddaughter's favourite doll and stuffed animal. While it appears calm, the Rio Grande is a fast-moving river and through it flow unsafe currents.More news: Kate Middleton debuts inspiring summer sun dress and espadrilles for patronage announcement
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This new image is reminiscent of the iconic 2015 photo of a drowned 3-year-old Syrian boy, Aylan Kurdi, whose body washed up on a beach in Turkey.
Ramire added: "I begged them not to go, but he wanted to scrape together money to build a home".
La Jornada reported that the family had been in Mexico for two months on a humanitarian visa they obtained at the Guatemalan border.
The farther reportedly hoped to find a job to support his family and buy a house, his mum said.
President Nayib Bukele of El Salvador expressed sorrow for the deaths and began procedures for repatriating the bodies. Mexican President Andres Manuel Lopez Obrador on Tuesday reacted to the photograph as a regrettable incident and said, "We have always denounced that as there is more rejection in the United States, there are people who lose their lives in the desert or crossing the river". The two died attempting to cross the Rio Grande that divides both countries. US Detains 400 Migrants Who Entered the Country From Under the Fence on US-Mexico Border. Washington has given Mexico 45 days to take action.