LA GRULLA, Texas (AP) — A National Guard soldier from New York who was seriously injured in the crash of a helicopter flying over the U.S.-Mexico border remained hospitalized Sunday while authorities released the names of the two National Guard soldiers and a Border Patrol agent who were killed.

The three killed Friday in the crash near Rio Grande City were: Chief Warrant Officer 2 Casey Frankoski, 28, and Chief Warrant Officer 2 John Grassia, 30, both with the New York National Guard; and Border Patrol Agent Chris Luna, 49. The cause of the crash remains under investigation.

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