Iowa Sen. Chuck Grassley's Twitter account was hacked on Monday by someone calling himself a follower of "hactivist" collective Anonymous. The move looks to be done in retaliation against anti-piracy bills SOPA and PIPA.

“Dear Iowans, vote against ACTA, SOPA, and PIPA, because this man, Chuck Grassley, wants YOUR internet censored and all of that BS,” read Grassley's official Twitter account Monday afternoon.

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Grassley, one of the original co-sponsors of PIPA (Protect IP Act), pulled his support for the bill after a wave of protests swept the internet last week, The Hill reported.

“And yes, I am an Anonymous follower,” the account tweeted moments after the original message, according to Talking Points Memo. That tweet was followed by “Yes I was hacked” and “Wow, Chuck hasn’t even changed his password."

The apparent hacker mentioned a specific location: “Well, its been fun getting Chuck’s account this week, so I better get off. I got nothing better to do since we got a snow day here in Osage.” The reference appeared to be to Osage, Iowa, which was in the midst of a snow storm when the hacking occurred, TPM reported.

Many of the hacked tweets have since been removed from Grassley's account.

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Senator Grassley's office did not immediately have a comment about the hacking, The Hill reported.