Serra Mesa June 22, 2023 4:43 pm Serra Mesa butane honey oil lab blast sends 2 to hospital, damages home: San Diego PD A butane honey oil lab uses butane, which is easily ignited, to extract THC from marijuana. US & World Videos 0:32 Public memorial held for San Diego philanthropist and cultural leader Joan Jacobs 2:51 Dozens of businesses being evicted in Otay Mesa 3:04 San Diego's new police chief confirmed unanimously 3:10 San Diego Padres' Manny Machado visits elementary school with best attendance 2:19 The ‘Fatal 15′: Public-safety advocates ID San Diego's most-dangerous intersections