Man accused of sending a threatening letter to Kevin Sumlin identified

A man accused in a Harris County stalking case is being linked to sending a racist and threatening letter to former Texas A&M football coach Kevin Sumlin.

According to his Defense Attorney, Val Zuniga, Robin Chiswell is being linked to the letter after his client's name was brought up during a stalking investigation in which he was arrested last November.

So far, no formal charges have been filed in connection to the Sumlin letter.

Chiswell is currently charged with felony stalking in a case being heard in the 184th State District Court. He is suspected in multiple stalking cases involving high-profile Houstonians, and investigators are asking for any additional victims to come forward.

According to court documents, Chiswell is in the Harris County jail with a $250,000 bond.

Back in September 2007, Kevin Sumlin's wife Charlene posted a photo of a handwritten letter which read, "You suck as a coach! You're a (racial epithet) and can't win! Please get lost! Or else."

Chiswell was scheduled for an arraignment hearing in a Harris County court Friday but did not appear in front of the judge, according to Zuniga.

The Houston Police Department has scheduled a press conference for 2 p.m. Friday in Houston to address accusations about Chiswell.