India, Sept. 15 -- The grandmother of Tyler Robinson, the 22-year-old accused of killing conservative activist Charlie Kirk, says she doubts he could have carried out the crime.

Debbie Robinson, 69, of Washington, Utah, told The Daily Mail that she does not believe her grandson is capable of murder. Authorities have described Tyler as becoming more political in recent years, but she says he was quiet and "never" spoke about politics. She also said her family is conservative, noting that Tyler's father Matt is a strong Trump supporter.

Tyler Robinson is charged with shooting Kirk during a debate hosted by Turning Point USA at Utah Valley University last week. He is being held in jail without bail on several charges.

"[Tyler] is the shye...