Intruder Sparks Evacuation at Parkland High School

Updated Saturday, Sept. 15:

The manhunt for an intruder at Parkland High School

Law enforcement and school officials said a high school student trying to get in shape for military boot camp inadvertently triggered the massive emergency response Friday. His behavior had appeared suspicious to a Parkland teacher, but it was innocent, officials said.

Updated 8 p.m, Friday, Sept. 14:

Police are searching for an intruder - preliminary reports say a white man wearing camouflage pants - who fled when approached at , 2700 N. Cedar Crest Blvd., before 6 p.m. Friday.

Traffic in that area of Cedar Crest is being diverted.

All students are out of the high school and the building was locked down as of 6:30 p.m.

The intruder is described as wearing camouflage pants and a tan vest with something "very bulky" underneath, according to a Breaking News Network alert.

The Morning Call reports that a student said a guy with a "packed vest" is in the school.

Activities including tonight's volleyball game at the school have been canceled. This week's football game is at Northampton High School.

The response includes a K-9 unit, mobile command unit, SWAT officers and a state police helicopter. A command post has been set up south of the high school in the lower parking lot. Police units from across Lehigh County are responding.

Nicole McGalla, district spokeswoman, said the Parkland football team, band and cheerleaders will not be brought back to the high school after the football game against Northampton. Instead, students will be dropped off at the district's Troxell Building on Cedar Crest Boulevard on school buses. With access to the high school prohibited because of the on-going activity, any students who left their cars at the high school won't be able to pick them up until Saturday

Parkland recently  and multiple casualties on school property. Dozens of police and emergency responders participated in the drill last month. A similar drill was also held at a Nazareth school over the summer.