Nine migrants were found dead in the Rio Grande in the US state of Texas after they, along with dozens of others, tried to illegally cross the US border from Mexico, overcoming a dangerous stretch near the city of Eagle Pas, AP reports..

Border guards found the bodies on Thursday as a large group of people crossed the river after heavy rains led to a particularly fast flow..

American border guards rescued 37 more people from the river and detained 16, while Mexican guards detained 39 migrants.

The search for victims continues on both sides of the border.

US border officials do not disclose which country or countries the migrants were from and do not provide any additional information about rescue and search operations..

The Del Rio sector of the border patrol, which includes the city of Eagle Pass, is quickly becoming the most popular corridor for illegal crossing.. In July, agents stopped migrants here almost 50 thousand times, in second place is the Rio Grande Valley - about 35 thousand.

This territory attracts migrants from dozens of countries, many of them with young children.. About 6 out of 10 detainees in the Del Rio sector in July were migrants from Venezuela, Cuba or Nicaragua.

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The sector, which stretches 395 kilometers along the Rio Grande, was especially dangerous because river currents can be fast and change quickly.. Crossing the river can be difficult even for strong swimmers. From October to July, the bodies of more than 200 dead migrants were found here..

Over the past 30 years, thousands have died trying to enter the US from Mexico, often due to dehydration or drowning..

In June, 53 migrants were found dead or dying in a tractor trailer in a driveway in San Antonio.. This has become the most massive tragedy in recent times for migrants from Mexico..