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HOUSTON – The person suspected of writing a threatening and racist letter sent to the home of former Texas A&M head coach Kevin Sumlin in 2017 has been identified, the Houston Police Department said during a Friday press conference.

During questioning for a separate stalking investigation, Robin Chiswell, a Houston resident, provided information that investigators believe linked him with the Sumlin letter, Val Zuniga, Chiswell's defense attorney, said.

“During the investigation, the issue about the Sumlin letter came up and the responses by the defendant led the investigators to identify him as the primary suspect in that case,” he said.

In September 2017, Sumlin’s wife Charlene tweeted a picture of the letter, which used a racial slur and told the coach to “please get lost,” and threatened “or else.” The return address on the letter was for the Houston Country Club, 1 Potomac Drive.

In November, Chiswell, a 1983 University of Texas graduate, was arrested in Houston on a stalking charge unrelated to the letter sent to the Sumlins, according to court documents. He is in jail with a bond set for $250,000, according to court documents.