The co-founder of popular sci-fi convention Dragon Con is facing the possibility of life in prison after ‘following’ a teen girl on Twitter, breaching a plea bargain agreement that has kept him out of prison on child molestation charges.

Ed Kramer, 53, has been under house arrest due to spinal injuries suffered while in prison following his guilty plea to three counts of molesting teenaged boys.

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As reported by the Gwinnett Daily Post, Kramer is now under investigation for his online activities, including ‘following’ a 14-year-old Brisbane, Australia, girl on Twitter, despite conditions of his plea agreement specifying that he not have “either direct or indirect with any person under the age of 16.”

According to authorities, Kramer joined Twitter three years ago under the name @edwardekramer. The account had lain dormant for some time, but Kramer had become more active recently, posting links to news stories. During that time he has ‘followed’ more than 1,900 people including the Australian teen.

The Twitter account has since been closed.

Gwinnett County District Attorney Danny Porter, said that Kramer’s actions could result in his being sent back to jail to serve out his 60-year prison sentence, representing 20 years for each count of child molestation he pleaded guilty to.

“(It’s) certainly possible,” Porter wrote in an email. “I’m looking into this.”

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Without a violation, Kramer only has 28 months of a 34-month house arrest sentence left to serve.

Kramer was originally arrested in 2000 on three counts of sex with minors, but has been in and out of prison and allowed to serve his sentence at home due to medical issues including a spinal injury suffered in a prison riot.

According to authorities, Kramer met two of the victims while dating their mother and a third via comic book stores and the game Dungeons & Dragons.

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In 2011, he was arrested once again, this time in a Connecticut hotel room with a 14-year-old boy after police received a tip.

Kramer no longer has an ‘operational’ affiliation with Dragon Con — held in Atlanta every year during Labor Day weekend — having sold his financial stake last year.