UPDATE @ 5 P.M. Oklahoma City Fire Department tells News 4 the incident involved an experiment in a chemistry lab. Several students complained that their chests were burning and there was tightness of breath. According to an Oklahoma Christian University spokesperson 12 students and one teacher assistant were transported to a local hospital where they are all in stable condition. ORIGINAL STORY OKLAHOMA CITY (KFOR) - Fire crews were on the scene of a medical situation at Oklahoma Christian University. EMSA is currently on scene addressing 3 people with breathing issues. Fire officials confirm, five people have been removed from a building on campus and the medical situation has been isolated to a lab. According to Oklahoma City Fire Department (OKCFD), the chemical involved in this incident is called Cyclohexanol. It is used in the manufacture of nylon, lacquers, paints and varnishes and as a solvent in cleaning and degreasing operations. Currently, Cyclohexanol is on the Hazardous Substance List because it is regulated by OSHA. We were alerted today of a medical situation involving several students who reported breathing difficulties following a chemistry class. We followed protocol, notified the students' families and can report that all students are in stable condition. We are investigating whether the conditions of the chemistry lab may have led to the students’ issues. The lab is closed as we work closely with the Oklahoma City Fire Department, a hazardous materials team, and EMSA. The safety and health of our students, staff, and faculty remain top priorities. This is a developing situation and we will keep the campus community updated as soon as we are able. - Neil Arter, Oklahoma Christian University Chief Student Life Officer and Dean of Students No further information has been released at this time. Other Headlines OK Attorney General denies renewing OSBE attorney contract OHP releases dash camera footage of semi-truck crashing into several other cars Oklahoma drivers cautioned to keep watch for deer Fire crews battle grass fire in northeast Caddo County Fire crews respond to house fire in NW Oklahoma City This story is developing.