"Pimentel's Internet activity -- both his spreading of bomb-making instructions links and his hate-filled writings -- were hosted by Google," Lieberman wrote.
"On his site www.trueislam1.com, Pimentel stated, "People have to understand that America and its allies are legitimate targets in warfare. This includes facilities such as army bases, police stations, political facilities, embassies, CIA and FBI buildings, private and public airports, and all kinds of buildings where money is being made to help fund the war.' As demonstrated by this recent case, Google's webhosting site, Blogger is being used by violent Islamist extremists to broadcast terrorist content," Lieberman continued.
Unlike YouTube's Community Standards, Lieberman writes, "Blogger's Content Policy does not expressly ban terrorist content nor does it provide a 'flag' feature for such content."
He continues: "Through your updated YouTube standards, Google has affirmatively stated that terrorist content will not be permitted on some of your sites. I strongly believe that Google should expand that standard to include your other platforms."
A Google spokeswoman did not immediately respond to a request for comment. Pimentel's website was still online as of Tuesday afternoon.