James Holmes, the suspected shooter in last week’s movie theater massacre, has told his Colorado jailers he doesn’t know why he’s locked behind bars, the Daily News reports.

But no one at the Arapahoe County Detention Center is buying Holmes’ story, a lockup worker told the News. The jailers who come in contact with Holmes, who is sequestered from other inmates, believe he’s faking amnesia.

Since the 24-year-old PhD dropout was accused of killing 12 theatergoers and wounding 58 at a midnight screening of “The Dark Knight Rises” last Friday, the media has lavished attention on Holmes’ odd behavior.

The suspect appeared in court on Monday with brightly dyed orange hair and made peculiar facial expressions. At times his eyes bulged and he often appeared tired.

Holmes was taken into custody after he allegedly stormed the sold-out premiere of the latest Batman film. Police have said Holmes wore riot gear, used smoke bombs and armed himself with three guns during one of the most violent shootings in American history.

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