The Trump Administration No Longer Wants Twitter To Reveal the Owner of an Anti-Trump Account (recode.net)
From a report on Recode: The Trump administration informed Twitter on Friday that it would withdraw its demand that the social media company unmask an account critical of the president -- a move that prompted Twitter to drop its lawsuit. On Thursday, Twitter revealed that U.S. customs agents filed a legal order in a bid to get the company to reveal who is behind @ALT_USCIS -- a so-called "alt-agency" account that has been taking aim at Trump, his immigration policy and the inner workings of the U.S. Citizenship and Immigration Services.
Alphabet Inc. owns Google, not Twitter.
Unless the Twitter account used a gmail account to open it, I don't see how Alphabet intelligence would be able to help.