The 2018 gas explosion that killed a 12 year-old girl in her Dallas home was caused by leaks in a gas line the local utility failed to detect and fix, the AP reports. Linda “Michellita” Rogers was killed and four others were injured. Even after two nearby homes were destroyed by gas-related fires in the two days before the deadly explosion, Atmos Energy failed to isolate the line, evacuate residents, and fully investigate the problem, National Transportation and Safety Board investigators said Tuesday. Subsequent investigations found about an additional 1,260 leaks in the area. Gas explosions are nothing new. Earlier this week, Baltimore officials said the deadly gas explosion that leveled multiple rowhomes last year was caused by gas buildup in the home following HVAC work, but the ultimate cause was still undetermined. (Dallas: AP; Baltimore: AP, Baltimore Sun)