(CNN) -- For nearly six months, Andrew Shirvell, an assistant attorney general for the state of Michigan, has waged an internet campaign against college student Chris Armstrong, the openly gay student assembly president at the University of Michigan in Ann Arbor.

Using the online moniker "Concerned Michigan Alumnus," Shirvell launched his blog in late April.

"Welcome to 'Chris Armstrong Watch,'" Shirvell wrote in his inaugural blog post. "This is a site for concerned University of Michigan alumni, students, and others who oppose the recent election of Chris Armstrong -- a RADICAL HOMOSEXUAL ACTIVIST, RACIST, ELITIST, & LIAR -- as the new head of student government."

Among other things, Shirvell has published blog posts that accuse Armstrong of going back on a campaign promise he made to minority students; engaging in "flagrant sexual promiscuity" with another male member of the student government; sexually seducing and influencing "a previously conservative [male] student" so much so that the student, according to Shirvell, "morphed into a proponent of the radical homosexual agenda;" hosting a gay orgy in his dorm room in October 2009; and trying to recruit incoming first year students "to join the homosexual 'lifestyle.' "

Michigan Attorney General Mike Cox has declined to comment directly about Shirvell's comments.

"Mr. Shirvell's personal opinions are his and his alone and do not reflect the views of the Michigan Department of Attorney General," Cox said in the written statement provided by his office to CNN's "AC 360" Tuesday night. "But his immaturity and lack of judgment outside the office are clear."

Shirvell said he works on the blog during his off-hours.

On "AC 360," Shirvell made no apologies for his blog postings, which include a picture of Armstrong with "Resign" written over his face. The same picture also had a swastika superimposed over a gay pride flag, with an arrow pointing toward Armstrong.

Shirvell acknowledged protesting outside of Armstrong's house and calling him "Satan's representative on the student assembly."

"I'm a Christian citizen exercising my First Amendment rights," Shirvell told CNN's Anderson Cooper. "I have no problem with the fact that Chris is a homosexual. I have a problem with the fact that he's advancing a radical homosexual agenda."

Armstrong has supported gender-neutral housing at the university for transgender students who haven't had sexual reassignment surgery.

Armstrong told CNN he has hired an attorney but did not give details on what legal action he may pursue. CNN senior legal analyst Jeffrey Toobin says Armstrong may have grounds for a harassment case.

CNN's Martina Stewart and Ed Payne contributed to this report.

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