LOS ANGELES (AP) - It started with a DJ's simple tweet telling his followers about a free block party on Hollywood Boulevard.
Evidently, too many people got the message, and it wasn't long before the Wednesday night party got out of hand.
The tweet lured thousands of raucous ravers to hear DJ Kaskade spin some tunes outside the landmark Grauman's Chinese Theatre as it hosted the premiere of the documentary "Electric Daisy Carnival Experience" about a hugely popular series of raves that were banned in Los Angeles after a teen died of a drug overdose.
The film features Kaskade, whose real name is Ryan Raddon.
"He just wanted to do something for the fans," Alastair Duncan, a spokesman for the DJ, said Thursday.
Not long after Raddon started playing, police and fire officials had to pull the plug because too many people had shown up.
Without music, the ravers grew restive and found themselves facing baton-wielding riot police. Three people were arrested after things turned rowdy, with would-be revelers hurling bottles at police and some jumping on a squad car.
Police and city officials were investigating what prompted the unruly crowd to gather. It was too early to say if Kaskade would face any legal action by authorities, city attorney spokesman Frank Mateljan said.
Duncan said Raddon had a permit from the Fire Department to play a free show and to close off one lane of traffic on the boulevard for a flatbed truck bedecked with enormous speakers.
Crowds gathered after Kascade tweeted: "ME+BIG SPEAKERS+MUSIC(equals)BLOCK PARTY!!!"
He apparently underestimated the appeal to his more than 90,000 Twitter followers. By 6 p.m., hundreds of people had gathered outside the cinema and were spilling onto the street. Police and fire officials soon closed the boulevard to traffic.
"They showed up because, allegedly, the DJ tweeted he was doing a concert," fire Battalion Chief Michael Bowman said. "People's expectation was they thought they were going to a free concert in the street."