Bond was set at $5,000 Friday afternoon for the Madison High School student who has been charged with making threats to Madison Consolidated Schools and to MCS faculty on Dec. 3, 2018.

Hanna R. Warren, 18, of Madison, was taken into custody Thursday at MCHS, she was held at the Jefferson County Jail and bond was set during a hearing in the Jefferson County Superior Court. If her bond is paid, she will be released and placed under electronic monitoring.

The probable cause affidavit in the case details the nature of the email threats made to MCS and school faculty and how law enforcement traced the accounts sending the threats to Warren’s cell phone.

With assistance from the FBI, the Jefferson County Sheriff’s Department was able to identify four Gmail accounts that on Dec. 3 created seven different emails, starting from just before 10:30 a.m. until 1 p.m.

The emails included threats to go to the high school within a time frame with a deadly weapon, specific threats to administrators and taunting phrases to the school and law enforcement, such as “So your really trying to find me. You’ll never find out,...”

Yancy Denning, a detective with the Jefferson County Sheriff’s Department, said tracking the source of the Gmail accounts and the emails was tricky because of software used on the device from which the emails were sent. The software gives users anonymity on the internet by making user data anonymous — including IP logs and other information. Students can use the software to bypass wifi filters set by schools.

Warren’s name was in some of the threatening emails, identified as being part of making the accounts and writing the emails. Law enforcement first questioned her on the day the threats were made.

Warren denied having any involvement in the crimes during interviews with local police and FBI agents, the affidavit says.

Throughout the investigation law enforcement obtained confirmation — through wireless account information, historic cell-site data and a digital extraction of the device — that Warren’s mobile device was affiliated with all of the different Gmail accounts.

According to the affidavit, the Gmail accounts were listed in the device’s logs of “User Accounts” that had been deleted. The web history contained content related to three of the account’s new account notifications, which users receive upon activating a new email address.

“The digital extraction of the motorola provided direct evidence that the (Gmail accounts) were accessed on the device,” the affidavit says.

Warren admitted to creating at least one of the email accounts in an interview with the FBI, the affidavit says. This account, which sent the first threat, she said had been created for her ex-boyfriend to use.

“Warren, by her own omission, stated that nobody else had access to the motorola when the threats were made,” says the affidavit.

After her arrest Thursday, Warren continued to tell law enforcement “that she did not make the email accounts or send the emails,” says the affidavit.

Courier staff writer Tali Hunt can be reached at (812) 265-3641 or at thunt@madisoncourier.com