Explosion Rocks Downtown L.A. High-Rise Office Building

An investigation was underway Friday after a “thunderous explosion” rocked the basement of a high-rise building in the Financial District of downtown L.A. the previous night, leaving four people with minor injuries, the Los Angeles Fire Department said.About 161 firefighters responded to 811 Wilshire Blvd. shortly after 10:10 p.m. and found evidence of an explosion and fire on a subterranean level of the 22-story office building, according to an LAFD news release.In addition to smoke and flames, crews also discovered a large volume of water in the basement, as well as electrical issues.