Law enforcement is investigating a cyber-attack after JeffCo Public School’s staff received an email from an individual who allegedly committed an undisclosed cybercrime, officials said in an online statement Wednesday.

According to the district, multiple staff members reported receiving an email on Oct. 31.

Kimberly Eloe, a district spokesperson, declined to comment and directed The Denver Gazette to an online statement.

“Jeffco’s Information Technology team is working together with cybersecurity experts and law enforcement to determine the credibility of the attack and scope of the incident,” the district said in a statement. “This is a cyberthreat and there is no concern related to physical safety.”

Colorado law requires government agencies to report data security breaches within 30 days of discovery to the attorney general.

Officials at the Colorado Department of Higher Education were on the hot seat last month after The Denver Gazette reported that the system didn’t promptly flag law enforcement about a massive data breach it had discovered in mid-June.

The department revealed the breach six weeks after it was discovered when officials at several Colorado universities learned of it after the state agency mistakenly mentioned in a meeting.

The department has not yet disclosed how many individuals might have been affected by the ransomware attack.

The Colorado Department of Higher Education is not the only institution to delay reporting compromised information.

In March, officials with Denver Public Schools disclosed that the personal information of as many as 15,000 employees was stolen in a “cybersecurity incident” that lasted for a month, according to The Denver Gazette’s media partner, 9News.

The hack was discovered in January.

Bill Good, a district spokesperson, did not immediately know Thursday when the attack was reported.

Attackers sometimes demand payments to unlock affected systems they’ve highjacked.

The Attorney General’s Office considers the attack a breach if it affects 500 or more Coloradans.

As of Thursday, JeffCo officials did not know the extent of the cyber threat.

“We do not know the scope and individuals impacted by this incident,” officials said.

The digital sky is not falling. The threat cyberattacks pose to individuals and national security is real.

According to the U.S. Government Accountability Office, risks to IT systems are on the rise as malicious actors are increasingly capable of carrying out cyberattacks.

It is unclear how many data breaches have occurred among Colorado agencies.

Lawrence Pacheco, an Attorney General’s Office spokesman, did not respond to an inquiry by the time this story published.

Denver Gazette investigative reporter David Migoya contributed to this report.