TULSA, Oklahoma - Tulsa Police are looking for a man they said assaulted a woman and caused a school to go into a lockdown, August 28.

The incident happened at the Community Action Project of Tulsa County's Briarglen Campus.

Tulsa Police told News On 6 two parents got into an argument inside the school. Police said a teacher tried to calm both parents down.

"We obviously practice drills for intruders on campus and things like that, so situations where police need to be called," said Rainey Talbot, Director of Marketing and Public Relations for CAP Tulsa.

That argument moved outside and turned physical. Police said the man involved took off and the staff took the mother and child back into the school to put the building on lockdown.

"They'll make the call, there's an announcement that said we need to go into lockdown, and then they close classrooms bringing them in from outside," said Talbot.

CAP Tulsa's Briarglen Campus is made up of Teachers who work with kids 6-weeks-old up to four-years old.

"We want to make sure that children and our employees are incredibly safe and secure in the environment that they are in," said Talbot.

The school said their teachers and students there practice all types of drills. Talbot said in this case, the lockdown worked as practiced.

"They go through the drills as well, unfortunately that is todays environment but we do fire drills, tornado drills and intruder on campus drills so they know what to do," said Talbot.

Although police are continuing to search for that man, Talbot said she has a message for parents.

"We have procedures in place to make sure their children are safe that are not at risk,” she said.

The school said parents were notified after the lockdown as is their policy.