Landau was given immunity by prosecutors in exchange for his testimony.
Bio: Azi Paybarah is a reporter for POLITICO New York. He has covered politics for The New York Observer, WNYC, The New York Sun and the New York Press.
City Hall Pro: Nine council members target Clinton
City Hall Pro: De Blasio downplays terror threat
Governor rides from the World Trade Center to Penn Station to reassure New Yorkers about recent threats
On Thursday afternoon, New York's elected officials summoned the press to let them know that everything is probably going to be alright.
'Officials told us it would be too time consuming to look through all of their roll-call training records'
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City Hall Pro: De Blasio to Labour, Stringer on LICH
It remains unclear whether Hamilton will align with the regular Democratic caucus and he refuses to formally signal his plans
Governors say their states will also share intelligence as terror threat grows