( CNN ) -- At least one person was killed when a National Guard helicopter crashed in waters off San Juan , Puerto Rico , a Federal Aviation Administration spokeswoman said Tuesday , citing preliminary information . `` The preliminary information we have ... is that the wreckage of ( the ) Army National Guard aircraft was found in the water near San Juan , '' spokeswoman Diane Spitaliere said in an e-mail . The aircraft was destroyed , she said . The crash occurred late Monday , according to Lt. Cmdr . Matthew Moorlag of the U.S. Coast Guard in Miami , Florida . The Coast Guard received the call to help late Monday night with search and rescue efforts , said Ricardo Castrodad , spokesman for the Coast Guard in San Juan . He said three crew members and three passengers -- one guard and two civilians from Puerto Rico -- were on board . The UH 72 Lakota helicopter departed Monday night from San Juan , he said . It was one nautical mile northeast from the Puerto Rican coast . Castrodad did not provide information on casualties but said the search for survivors was ongoing . CNN 's Mike Ahlers and Maria P. White contributed to this report .
The crash occurred late Monday , U.S. Coast Guard says . A man was killed and two others were injured when a boat carrying about 20 people capsized in the Gulf of Mexico off Louisiana on Sunday.