(NECN/NBC News: Chris Glorioso)- The NYPD says they have subpoenaed Twitter to try to identify someone who threatened a Broadway theater.
Mike Tyson arrived to his theater district show without a word.
The violent words on Twitter are the ones that have captured the NYPD's attention.
Someone used the social networking site to write threats against the Longacre Theater where Tyson is performing.
Spike lee is directing the show.
"I have full confidence in Police Commissioner Kelly," Lee said.
"He's going to do what needs to be done."
While taping an interview for the debrief with David Ushery, Spike Lee said he hopes the theater threat doesn't turn away ticket holders.
Until Wednesday, the NYPD was frustrated by twitter executives who refused to release private information about the threat-maker.
Twitter insisted on a court order.
"Twitter should be happy to cooperate, especially if it's a terrorist threat we all want to know about. Lives come before everything else."
The NYPD says investigators became aware of the threat last Friday, when they saw a Twitter user promising to commit mass murder at the Longacre Theater.
On July 29, the Twitter user wrote: "I might just shoot up this theater in New York. I know they leave their exit doors unlocked. Ha, now I gotta plan it step by step."
Three days later, the Twitter user wrote: "This [expletive] is no joke. Yo, I'm serious. People are gonna die just like in Aurora."
Two days after that, the twitter user tried to explain why the attack hadn't happened yet, writing "I had last minute plans and I'm in Florida rite now, but it'll happen, I promise. I'm just finishing up my hit list."
"This could turn out to be something major and people's lives could be at stake," one New Yorker said.
, Spike Lee
, Mike Tyson
, Longacre Theatre
, David Ushery
, Twitter user