Lena Dunham Says She Wants Her Casket Driven Through NYC Pride Parade

(CNN) – The four people hurt in an apparent gas leak on Monday at Los Angeles International Airport were all airport employees, according to an update provided by the Los Angeles Fire DepartmentThe condition of the most severely sickened victim has been upgraded from grave to critical following the incident.A woman and three men were working in or near a utility room “when a popping sound was heard, and the apparent release of Carbon Dioxide vapor took place,” the LAFD report said.The most seriously injured man, described as being in his 50s, was found not breathing and without a pulse inside the utility room. CPR was immediately performed and advanced life support given by emergency responders as he was taken to a nearby hospital, the fire department shared.“LAFD Hazardous Materials experts have closely examined the area with sophisticated instruments, and discovered only trace residue of Carbon Dioxide remaining within the utility room,” said the LAFD.Portable fans are being used to further ventilate the immediate area.All other terminals and flights are operating normally, according to a tweet from LAX airport.The terminal was cleared of passengers due to a hazardous materials investigation, the airport tweeted earlier on Monday.The Federal Aviation Administration issued a ground stop for United Airlines as a result of the emergency.