Authorities say the autopsies of five people whose bodies were pulled from the Rio Grande show they were drowning victims.
The five unidentified people were believed to be illegal immigrants who died while trying to cross the river.
US authorities recovered the bodies of four men and one woman Monday night after a Mexican fisherman reported them.
The bodies were found in a rural area below the Falcon Dam about 65 miles northwest of McAllen.
A Starr County investigator says yesterday's autopsies ruled out homicide.
Authorities say they'll continue to try to identify the victims, who were not carrying I-D cards.
The most recent statistics show 38 drownings from the Border Patrol's El Paso to Rio Grande Valley sectors between October of 2005 and September 15th of this year.
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