A Boston-area blogger who declared "one down, 534 to go" after the shooting of Rep. Gabrielle Giffords has had his gun license pulled and a "large amount" of weapons removed his home.

Travis Corcoran, a comic book retailer in Arlington, Massachusetts, made the comment in a blog posting on January 8, the day of Giffords' shooting.

Corcoran reportedly declared on his blog, “It is absolutely, absolutely unacceptable to shoot indiscriminately. Target only politicians and their staff and leave regular citizens alone.”

The "534 to go" comment appeared to refer to the other 434 members of the US House, and the 100 US senators.

“We certainly take this as a credible threat, and credible until we prove otherwise,” Captain Robert Bongiorno of the Arlington police department told WBZ-TV.

Sources told the station that 11 guns were seized from Corcoran's home after police pulled his gun license pending an investigation of his "suitability" to carry firearms. It wasn't clear if the 11 guns were the sum total of the "large amount" of weapons police said they found.

Corcoran's blog appears to have been pulled offline, or restricted to authorized users.

Arlington police have requested the aid of federal law enforcement, the Boston Globe reported.

Corcoran considers himself an "anarcho-capitalist," a radical branch of libertarianism. In a Tweet on January 8, Corcoran declared, "Not all killing is murder. US troops have killed many under Obama's presidency. Is he a murderer? Or is it legitimate in war?"

In a Twitter exchange with reporter Laura Leslie, he declared, "As per the Declaration of [Independence], when a [government] becomes destructive those ends, it may be abolished ... and the most moral approach is that which spares the maximum number of lives. Thus, assassination is a legitimate tool."

He also argued that his blog is "to some degree, political theater (with a very serious anarchocapitalist theme) and thus long-time readers understand that '1 down, X to go' COMBINED with my strong assertion is ... entirely in keeping with a liberty-loving stance..."

Corcoran runs the Heavy Ink comic book store, and the controversy surrounding his blog comment has reached the comic book business. His LinkedIn profile describes him as a software engineer educated at Cornell University.

He has 90 days to appeal the loss of his gun license in court, Arlington police said.