According to the testimony, the driver of the van, Osvaldo Aldrete-Davila, failed to yield to Agent Ramos’ attempt to stop him, jumped out of his vehicle and attempted to run back to Mexico. After Ramos told Aldrete-Davila to stop, Ramos drew his service revolver and pointed it at Aldrete-Davila. Aldrete-Davila jumped into a steep ditch filled with dirty water and when he tried to climb the steep incline out of the ditch, he was confronted by defendant Compean, waiting for him with a shotgun pointed directly at him. During his testimony, Compean acknowledged that at that time Aldrete-Davila held his hands up, as if to surrender, with his palms open, and no weapon was in either hand, or evident on his person. [] Agent Ramos also testified that when he saw Aldrete-Davila in the ditch, he had an opportunity to look at Aldrete-Davila’s hands, which he is trained to do for self defense and defense of another, and did not see any weapons in either of Aldrete-Davila’s hands. [emphasis added]
Source: U.S. Attorney’s Office, Western District of Texas, press release, Sept. 8, 2006.
It would be a lot more convincing if the actual testimony was available, rather than the word of someone who has a vested interest in the case (the prosecutor). Still, I suppose this is as good we have at this point.