This story was updated April 18, 2018, at 11:59 p.m. with more information.
The Tennessee Bureau of Investigation and the office of Homeland Security have been tapped to begin looking into Tuesday's TNReady traffic pattern that state education officials say was consistent with an online attack.
On Tuesday, education officials announced that the company handling statewide testing experienced a "deliberate" online attack, leaving students unable to submit answers or unable to log in.
Education Commissioner Candice McQueen and her team initially reached out to the TBI and its cyber security expertise in a briefing Tuesday and then made the announcement in a statement late Wednesday.
McQueen also announced that the education department is reaching out to a third party with cyber security expertise to analyze testing vendor Questar's response to the possible cyber attack.
There continues to be zero evidence that any student information or data was compromised in the incident, according to a news release.
Students "had a smooth day of testing today, with more than 150,000 online test sessions completed – the highest one-day total ever for online testing in Tennessee," the news release states.
About 300,000 students will take TNReady online this year, and while those students will participate in multiple test sessions, "the statistics we see today confirm that we are able to move forward successfully with online testing," the news release states.