Texas Attorney General Ken Paxton has said he will open an investigation into San Antonio's decision, with a 6-4 vote, to block Chick-fil-A from its airport over the company's donations to anti-LGBTQ groups.

The anti-LGBTQ politician wrote a letter to the city council on Thursday, claiming both the Constitution's "protection of religious liberty" and the restaurant's chicken were "under assault at the San Antonio airport."

A Chick-fil-A restaurant in the Denver International Airport.

Paxton also asked U.S. Department of Transportation Secretary Elaine Chao to open an investigation into whether the city's action "may violate federal law and applicable federal regulations."

"The City's Attorney's Office is reviewing the letter. I am withholding comment until we have had adequate time to analyze it," San Antonio Mayor Ron Nirenberg said in a statement, NBC reports.

Greg Brockhouse, a councilman running or mayor against Nirenberg, who supported the move to keep Chick-fil-A out of the airport, wrote an apology letter to the company over the city's decision, The Texas Tribune noted.

Brockhouse wrote that the decision "does not reflect the overwhelming belief in our City [sic] that you are a valued business and community partner," adding that it was "the best of what we hope for in an employer and organization doing business in, and employing people from," San Antonio.

Paxton has taken to Twitter to show his support of Chick-fil-A, with the "Come And Take It" flag altered with a picture of waffle fries in place of the canon.

Local news coverage follows.