Michelle Louise Kolts was booked into a Tampa-area jail with a $180,000 bond on 24 counts of “making, possessing, throwing, projecting, placing or discharging [a] destructive device.”

Thursday night, Kolts’ mother contacted Hillsborough County sheriff’s deputies out of concern about her daughter, Sheriff Chad Chronister said. Upon searching her bedroom, Kolts’ parents had discovered “what appeared to be a significant amount of pipe bombs.” They also found bomb-making instruments and other weapons.

“If you see something suspicious, please say something,” Chronister implored, asking the public to follow the example of Kolts’ parents. “The amount of highly destructive materials we found in this home [was] astonishing.”

Twenty-four separate pipe bombs were ultimately recovered, along with smokeless pistol powder, fuse material, 23 knives, two hatchets, nunchucks, two BB rifles, six BB handguns and dozens of books and DVDs about bomb-making.

The pipe bombs also contained potential shrapnel such as nails and pellets, Chronister said.

“It would have taken less than 60 seconds per device to add the powder and fuse material [Kolts] already possessed to detonate each bomb,” Chronister observed. “If used, these bombs could have caused catastrophic damage and harm to hundreds, even thousands of people.”

The sheriff also revealed that last year, his deputies were called to Kolts’ house due to a tip from an online printing company which flagged worrisome materials she had ordered, including bomb-making instructions.

“She became consumed with the Columbine and Oklahoma killings,” Chronister added. “She stated at that time her intentions weren’t to harm anyone. We felt comfortable that she wasn’t a harm to herself or others at that time.”

The investigation was coordinated with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and the FBI.

Kolts has no apparent prior criminal history, a review of Hillsborough County court records shows. She is only recorded as having committed a trio of minor civil traffic infractions. Family court records show that Kolts’ parents divorced in 2002 when they lived in Washington state.

“You can appreciate the fact that these parents had the courage to call us,” the sheriff said, describing a pattern of alleged behavior on the part of Kolts that included an “infatuation for mass shootings and mass killings.”

Kolts could not be reached for comments by press time.