Peter Knudson, a spokesman for the National Transportation Safety Board, also confirmed that a total of four people were on board the Cessna T337G and that he knew of no survivors. An NTSB investigator was expected to be at the crash site Monday. Confirmation of the total number of deaths will come later after additional investigation at the scene, Knudson said. Cmdr. Vinnie Montez of the Boulder County Sheriff’s Office said the initial call of a plane crash in a heavily timbered area in the 11000 block of Lefthand Canyon Drive came in at 9:41 a.m. Montez said the intense heat at the scene made it impossible for investigators from the Federal Aviation Administration and the Boulder County Medical Examiner’s Office to safely approach the aircraft Sunday afternoon. As the fire raged after the crash, an evacuation warning was issued for residents near the 10000 block of Lefthand Canyon Drive and the towns of Gold Hill and Ward at 10:31 a.m., according to an Everbridge notice. The Boulder County Sheriff’s Office lifted the evacuation warning at 11:37 a.m. Despite the dry conditions, multiple agencies from surrounding areas, including Boulder Mountain Fire, Left Hand Fire, Colorado State Patrol and Indian Peaks Fire, responded to the crash site and were able to contain the spread to about an acre. As of Sunday afternoon, it was reportedly 90 percent contained, with a smaller crew remaining at the scene overnight. After the Boulder County Sheriff’s Office tweeted that the evacuation order had been lifted, local residents thanked fire and rescue crews on social media for their quick response. Authorities were unable to provide details about the plane’s point of origin, flight path or destination. The fire was contained to an area with large timber and no structures were damaged. Montez said several firefighters suffered high levels of carbon dioxide and experienced breathing problems at the scene of the wreckage and were treated at the scene. He said additional details will be released when they become available. A small plane crash sparked a fire near the 10,000-person block of Lefthand Canyon Dr. An EVACUATION WARNING has been issued for the surrounding area, including the towns of Gold Hill and Ward. Take precautions and prepare to evacuate. pic.twitter.com/H1peYr0aWh — BoulderCountySheriff (@BldrCOSheriff) July 17, 2022