Students are back in the classroom following an alleged bomb threat to Pattonville High School Wednesday morning. 

School officials received the bomb threat at around 10:20 a.m. The call indicated a bomb was in a school locker. Both police and fire officials were called to the scene to assist in the matter. 

Students were evacuated from the school from approximately 10:36 a.m. to 11:40 a.m.

Police brought in bomb-sniffing dogs to search the building and found nothing and at 11:30 a.m., police gave the all-clear to re-enter the building. 

Fox 2 News first reported the bomb threat on their Twitter page.

Here are the two messages sent to district parents: 

First message:

"Around 10:20 a.m., Pattonville High School received a phone call indicating a bomb was in a school locker. The school was immediately evacuated. Pattonville is working with police and fire officials to search the building with bomb-sniffing dogs to make sure it is safe for students to return to classes. Students are in a safe location outside in the stadium waiting for the all clear. We wanted to make you aware of this situation and will contact you once students are back in the building. Thank you."

Second message:

"As we mentioned in an earlier call, Pattonville High School was evacuated this morning due to a bomb threat. Police officials brought in bomb-sniffing dogs to search the building and fortunately found nothing suspicious. At 11:30 this morning, police and fire officials concluded their search and gave us clearance for students to return to classes. Classes will continue as normal for the remainder of the day. We are thankful students were never in any danger and we commend our students and staff for their patience during this matter. We will continue to work with police to investigate the matter and deal with the person responsible through any legal means possible. Thank you."

Several parents left their take on the issue on Maryland Heights Patch's Facebook page: 

Angelia Hanford Milhous said: "they called the parents to let us know the kids were in the stadium and the police were there with bomb sniffing dogs. They were out of the school just over an hour while the school was searched. Everyone is back in class now ... They were out of the school a little over an hour. I am guessing that the parents were called within a half hour of the evacuation and then again after they were all back in class. Pattonville always does a great job keeping parents notified. My son is a junior and has been in the school system since kindergarten."

Dawn Vaughan Pollack said: "My (daughter) is a sophmore. They were all taken to the football field & sat in the stands. No word as to who made the call. Suppoesdly the bomb was in a locker."

Michele Hankins Johnson said: "The district says they will investigate and "will deal with the person responsible through any legal means possible."

Maryland Heights will provide more information on the threat as information becomes available. Stay up to date with all the latest Maryland Heights news with our free, daily newsletter.