ANN ARBOR, MI -- Police are responding to Huron High School in Ann Arbor as of about 12:45 p.m. on Friday.

Ann Arbor police Detective Lt. Matthew Lige said police are responding to a report of a suspicious person possibly wearing a mask at the school. He could not provide more information at the time.

This story will be updated when more information becomes available.

1:13 p.m. Friday, May, 27, 2016

At about 12:40 p.m., Principal Janet Schwamb reported an unknown person wearing a black mask and hoodie was inside the school. School officials believe the person is male and is not affiliated with school as student or staff member, Lige said.

Huron High School is on lock-down while police search the building to see whether the intruder is still inside. There is no report of shots fired, injuries, threats or weapons of any kind at this time, Lige said.

"We're in the process of determining what this really is and determining if there is any threat," he said, adding that officers are taking these steps out of an "overabundance" of caution.

1:31 p.m. Friday, May 27, 2016

Ann Arbor Police, Washtenaw County Sheriff, Pittsfield Township Police, University of Michigan Police and ATF are all on scene.

Rhory Gould, father of Huron High School sophomore Sarah Gould, arrived at the school after hearing from his wife that police were on the scene. He has been communicating with his daughter Sarah, who says "they don't seem worried" in the school right now.



1:35 p.m. Friday, May 27, 2016

A student in the building said three officers with a dog came into a classroom on the second floor, looked around and left.

1:47 p.m. Friday, May 27, 2016

Parent Maurice Page is awaiting more information at the school. His 15-year-old daughter Angie Page has texted him from inside the school saying that she's scared and doesn't know what's going on.

"I understand why communication is down, but as a parent it's just hell waiting here," he said.

2:30 p.m. Friday, May, 27, 2016

As of about 2:30 p.m. parents were being allowed on the grounds. Police believe Huron High School is dismissing classes for the rest of the day, but school officials have not officially confirmed that students will be released from the school at this point.

4:21 p.m. Friday, May 27, 2016

Huron High School Principal Janet Schwamb emailed Huron families with an update on the incident. She said the students were never in any danger and noted all afternoon activities at the school had been cancelled.

"The Board of Education and Superintendent, Dr. Jeanice Swift, want to thank the multiple law enforcement first responders who ensured that Huron High School was safe and secure for all of our student, faculty, staff, and administration," Schwamb wrote.

She also thanked the teachers for their support through the day.

It's all clear at Huron High School following a lock-down today RE a suspicious person. Police are still there, but again: All clear. — A2 Public Schools (@A2schools) May 27, 2016

Huron really in lockdown — G-rizzle (@richbabby_) May 27, 2016

So apparently Huron is on lockdown... Wtf😑 — вαвуgιяℓ❁ (@ciaaaaarrrraaaa) May 27, 2016

When ppl at pio are complaining about lack of ac but Huron is on lockdown w 5 squad cars outside :/ — Akhil M (@adude28) May 27, 2016

Huron on full lockdown after suspicious guy spotted in mask and hoodie. #PrayForHuron — Nico (@nic_mic_03) May 27, 2016

Lockdown at Huron — micki minach (@toolitmick) May 27, 2016

i swear to god if the huron lockdown is all from a terrible senior prank i will not be surprised and extremely disappointed — paleorobot (@paleorobot) May 27, 2016

Another photo of the Huron lockdown pic.twitter.com/exXXGtdcxP — cam (@FALLINGBEATRICE) May 27, 2016

Reporters Ben Solis, Lauren Slagter, Martin Slagter and Melanie Maxwell also are contributing to this report.