Authorities search for sender of global email bomb threats

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Authorities across four countries are trying to learn who sent dozens of email bomb threats Thursday afternoon, causing anxiety and business disruptions but no reported violence.

Threats were reported across the United States, Canada, Australia and New Zealand.

Universities, courthouses and newspapers received them. It was unknown if the threats were identical.

Local police in dozens of cities and counties got involved. So did the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives.

The recipient would receive an email saying that there was a hidden bomb that would detonate unless the sender received a Bitcoin ransom, New Zealand police said.

This email demanding $20,000 via Bitcoin was forwarded Thursday to CNN affiliate KOCO-TV in Oklahoma City by a viewer who received it at her business. It’s unclear whether everyone who received a threat on Thursday received the same email.

The message was identical to an email warning posted on social media by the Cedar Rapids, Iowa, Police Department and similar to descriptions of other threats posted on social media nationwide.

The Cedar Rapids Police Department posted: “The Police Department has found NO CREDIBLE EVIDENCE that these emails are authentic. It appears to be a robo-email that has been sent throughout the area hoping to scam businesses out of money. We have also received information that businesses in surrounding counties may have also received this email.”

CNN is not disclosing the names of the sender and recipient or specifics of the Bitcoin account.

Similar threats were sent earlier

It is unclear if Thursday’s threats could be related to a series of hoax bomb threats sent via an online messaging service to recipients in multiple states since late August.

CNN has learned that over more than three months, academic institutions, federal and state law enforcement agencies, gun stores, and municipal offices in more than a dozen states received threatening emails deemed hoaxes by law enforcement authorities.

In a warning reviewed by CNN, the FBI recently shared information with law enforcement authorities nationally about the prior emails sent through an email service called “Guerilla Mail” that masks the identities of senders.

The bulletin indicated the FBI has not identified any real or hoax devices at the threatened locations, suggesting law enforcement deemed at least some of the threats credible enough to conduct searches.

Threats at universities, media, courthouse

In Seattle, the University of Washington noted in a campus-wide alert that the FBI had “advised that the email is not a credible threat.”

The university concluded sweeps of possibly affected buildings.

The Thurston County Courthouse in Olympia, Washington, and the Park Record newspaper in Park City, Utah, also received similarly threatening emails. People have been allowed back inside buildings at those locations, according to tweets on their verified Twitter accounts.

In California, the Riverside Sheriff’s Office had “an influx of email threats” and is taking them seriously, although no threat has been substantiated.

The San Francisco Police Department responded to reports of bomb threats at locations throughout the city.

“We have received information that several other cities across the United States have received similar threats,” police said.

Pennsylvania State Police are “investigating some bomb threats in the eastern part of the state,” a spokesman for the department tells CNN.

“Penn State University Police, in conjunction with the Federal Bureau of Investigation, is investigating a message received by individuals in multiple locations on campus and across the state,” the university said in a statement. “Police say this does not appear to be a legitimate threat, however, an investigation is ongoing.”

University police later said the threat appears to be a hoax.

The Chicago Police Department received 15 to 20 reports of emailed threats in the past few hours, according to Officer Jennifer Bryk.

Director of Communications Anthony Guglielmi tweeted, “#ChicagoPolice are working with federal partners on the investigation, and at this time there is no elevated threat level for the city of Chicago.”

Threats were also emailed to the Charlotte News & Observer and the Raleigh News & Observer newspapers in North Carolina.

Dozens more threats continued to come in across the country later into the day, authorities reported.

Threats spanning four countries

The FBI has acknowledged threats across Canada, with multiple emails in Vancouver, Ottawa and Toronto.

“We encourage Canadians to follow the direction of local law enforcement and to report anything suspicious to them,” said Scott Bardsley, Senior Advisor for Communications for the Office of the Minister of Public Safety and Emergency Preparedness. “Swatting incidents are serious crimes and will be investigated by police.”

New Zealand authorities are aware of three similar incidents of threatening emails demanding ransoms of Bitcoin, according to a New Zealand police spokesperson.

And the Australian Cyber Security Centre (ACSC) has alerted a “widespread bomb threat email campaign.”

“Under no circumstances should individuals respond to such emails, or transfer any money or bitcoins,” said an ACSC spokesperson. “As a precaution, state policing agencies are treating these emails as a legitimate threat until confirmed otherwise. If individuals receive the email, we encourage them to report the matter to their local police service.”

Remaining Vigilant

Although the threats are not believed to be credible, law enforcement is still watching the matter closely.

Colorado’s State Emergency Operations Center (SEOC) has activated at level 3 operations, indicating that the situation requires “requires enhanced monitoring and coordination,” according to the agency.

The SEOC said that the FBI Joint Terrorism Task Force is the lead agency in the joint effort. The FBI are reporting that the emails have appeared in more that 25 states, according to the SEOC’s statement.

And in San Francisco, Officer Michael Andraychak told reporters that all threats are being investigated and bomb sniffing dogs have been utilized.

“We take all threats of bombs and destructive devices very, very seriously and investigate them thoroughly,” Andraychak said.

Nearly 20 emails were sent to businesses across the city, Andraychak said, and the Jewish Community Center self-evacuated in response to threats on their block.

“As always, we encourage the public to remain vigilant and to promptly report suspicious activities which could represent a threat to public safety,” the FBI said.

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