Spanish and American officials said they could not yet draw such a link.
"These are very important images," one senior Spanish official said.
He didn't think the Spanish officials were in any hurry to dispose of his case if they had one.
But Spanish officials said they hoped for a quick resolution to the conflict.
That annoyed Spanish officials, who said they had been expecting him.
"What we are working on now is where each person will go," a Spanish diplomatic official said.
Spanish officials said the heat had been responsible for at least 12 deaths since Friday.
"Spain is not a bridge to the community," a Spanish official said.
The Spanish officials were allowed to write letters to their families.
Spanish officials say that the aircraft deal would have created hundreds of jobs.