An electric generator explosion shook a 19-story downtown office building Thursday night, sending two people to hospitals and flooding part of the basement, authorities said.
The blast occurred shortly after 10:15 p.m. under the building on Wilshire Boulevard, the Los Angeles Fire Department said.
It broke a few pipes, flooded part of the basement, knocked out power inside the building and rendered the fire-safety system inoperable, but the structure itself appeared to be sound, fire department spokesman Brian Humphrey told City News Service.
Humphrey said four people were assessed for injuries: a woman with head pain and a man with back pain were taken to hospitals, while one adult declined treatment and another just walked away.
A fire that broke out was quickly extinguished as more than 160 firefighters rushed to the scene, he said.
Officials at the Staples Center say the explosion caused a momentary power outage at the arena, where a Shania Twain concert was underway.
We had so much fun in LA that we blew the power out! We came back up within minutes and kept rocking @STAPLESCenter! #rockthiscountry— Shania Twain (@ShaniaTwain) August 21, 2015
At Shania Twain concert power went out in start of song! pic.twitter.com/y2jaIydLVb— Sandra Gonzalez (@gonzsndy) August 21, 2015
Twain's concert abruptly halted while the country singer was midway through "That Don't Impress Me Much." Twain momentarily left the stage, but returned minutes later when power restarted.
The building in the downtown business district is home to offices, a bar, a restaurant and a nightclub.