Navaira has been undergoing rehabilitation since wrecking his tour bus in suburban Houston in March. His agent, Joe Casias, did not return a call Friday from The Associated Press for comment.
Casias told the San Antonio Express-News that Navaira suffered no bone fractures but doctors "are watching him very closely."
He said the couple were on the way back from rehabilitation at the time of the wreck. The 46-year-old singer had been taking his rehab sessions in Houston until Hurricane Ike caused the couple to return home to San Antonio recently.
After the Houston accident, doctors performed two brain surgeries and repaired an aneurysm in the performer's right lung. His doctors had been encouraged by his quick recovery but have said it is difficult to determine whether he will recover fully.
Known to his fans simply as Emilio, the singer has released more than a dozen albums with his band. He won a Grammy for best Tejano album in 2003 with "Acuerdate."
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