Further details would not be disclosed since the incident is still under investigation, said Oscar Saldaña, spokesman for the U.S. Customs and Border Protection.
Yeah, I'm sure "mums" the word, since the suspects are probably illegal aliens and may be eligible for Obama Amnesty, so the government needs some quiet time to figure out if shooting Border Patrol agents while in fear of getting caught for being in the country illegally is actually a serious crime or not.