HOUSTON, Dec 28 - Two people were killed on Wednesday when an American Army Air National Guard helicopter crashed into waters near the Bayport Cruise Terminal in Texas, military officials said.
The cause of the accident, some 25 miles (40 km) southeast of Houston, was not yet known. The names of those killed have not been released.
The helicopter crash did not affect navigation in the Houston Ship Channel, which links the busiest US petrochemical port to the Gulf of Mexico, the Houston Pilots Association said.
"We're being told it's a military grade helicopter from what the witnesses are telling us," Pasadena Fire Department Marshal David Brannon told Houston TV broadcaster KTRK.
Fire officials were not immediately available for comment.