A second bomb threat in two months at Skyline High School has put Ann Arbor Public Schools officials and Ann Arbor police officers on alert.

Skyline Principal Sulura Jackson said in an email Tuesday a bomb threat was found Monday evening on the wall of the second-floor boy’s bathroom. Jackson said the threat stated, “There will be a bomb Wednesday during parent conferences.”

Jackson said AAPS protocol is being followed and the building will be searched Tuesday evening, as well as on Wednesday before parent-teacher conferences, slated to begin at 5 p.m.

“A full investigation will be done to determine who wrote the message,” Jackson stated. “If it is determined who wrote this threat, they will be dealt with under the district’s disciplinary policies and the law. This type of threat is not tolerated.”

A threat was written in the same bathroom on March 14, according to school officials. Security was enhanced but nothing ever came from the threat.

District spokeswoman Liz Margolis said the threat was frustrating and would cause a disruption into normal school activity, but the threat is not believed to be credible at this point. However, the district considers any threat to be serious, she said.

Bathroom usage will be restricted during the school day on Wednesday and students will be forced to leave the building before parent-teacher conferences are scheduled to begin, Margolis said.

She added that charges will be brought against whoever is found to have made the threat.

“We take them very, very seriously,” she said. “We can never not take them seriously.”

Forsythe Middle School received a similar threat in February.

Any parents who have questions for Skyline administrators are encouraged to call the school at 734-994-6515.

Kyle Feldscher covers cops and courts for AnnArbor.com. He can be reached at kylefeldscher@annarbor.com or you can follow him on Twitter.