State police say a Glen Rock woman wrote the bomb threat that caused an evacuation of the Shrewsbury Wal-Mart last May.

Melanie Ann Rowe, 20, of 44 Water St., Apt. B, is charged with bomb threats, risking catastrophe and terroristic threats, according to court records.

Police say Rowe, who was an employee of the store at the time, reported the bomb threat after having left the threat on a note early that morning.

"You have until 8:30 a.m. I will be back with a bomb," the note read, according to charging documents.

Threat:  The morning of May 5, state police were sent to the Shrewsbury Township Wal-Mart, at  698 Shrewsbury Commons Ave, for a report of a bomb threat.

An employee, later identified as Rowe, found the note written on a 3x5 cardstock card in a stall in the women's bathroom, according to police.

The building was evacuated from 6 a.m. until noon that day.

Troopers searched the store, and no explosives were found, court documents state.

Viewing surveillance footage, police say they found only Wal-Mart employees entering and exiting the woman's restroom. Of those employees, Rowe was seen entering the bathroom six times in four and a half hours, according to charging documents.

On her sixth trip, Rowe discovered the bomb threat note, and she reported it to a manager about one minute later, police said.

She gave police a written statement on what she had found that day, as well as an "associate information form" from the store, documents state.

Rowe: Police compared those documents with the handwritten bomb threat and found "several distinct similarities" in the handwriting, charging documents allege. Additionally, Rowe quit her job at the Wal-Mart without explanation two days after the incident, police said.

On Thursday, police spoke with Rowe, documents state. Police say they informed Rowe of the similarities between the documents and the bomb threat note, and Rowe confessed to writing the threat and placing it in the area where she found it, court records state.

She gave police a written statement confessing to the crimes, police said. Documents do not state why she allegedly wrote the note. State police could not be reached.

Rowe was arraigned on the charges Tuesday morning at District Judge Nancy Lee Edie's office. She was released on $25,000 unsecured bail, meaning if she does not show up to court proceedings, she could forfeit that amount.

A phone number could not be found for Rowe, and it is unclear if she has an attorney.

Her preliminary hearing is scheduled for 10:30 a.m. Feb. 28 at Edie's office.

— Reach Christopher Dornblaser at cdornblaser@yorkdispatch.com or on Twitter at @YDDornblaser.

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