article_snippet.sent: Annika McKenzie believed Engelhardt had 'put her hands' on her daughter earlier in the day, according to ABC 7.
article_snippet.sent: Engelhardt refused to speak with Annika McKenzie, telling Annika McKenzie to first get a security pass.
article_snippet.sent: Authorities say Engelhardt was shoved against the wall, placed in a headlock and thrown to the floor.
article_snippet.sent: Another teacher was able to break up the melee and attend to Engelhardt.
article_snippet.sent: Attacked and left unconscious: This photo, taken inside Alverta B. Gray Schultz Middle School in Hempstead, New York, on Wednesday, shows Engelhardt Engelhardt knocked out following the assault .