2 dead, 3 injured in Collin County gas line explosion, officials say The explosion was reported around 4 p.m. in the area of Farm to Market Road 2756 near Highway 78. Author: Jake Harris Updated: 8:49 PM CDT June 28, 2021 COLLIN COUNTY, Texas — Updated at 8:48 p.m. with information from the Collin County Sheriff's Office. Two people are dead and three are injured in a Monday gas line explosion that happened in an unincorporated area of Collin County near Farmersville, officials said. Princeton and Farmersville fire departments, Collin County EMS and multiple other local law enforcement agencies are at the scene of the explosion, which was reported around 4 p.m. in the area of Farm to Market Road 2756 near Highway 78.