There is no link between the bizarre letters that arrived on Capitol Hill on Thursday and the bombing of a military recruiting station in Times Square, according to a Capitol Police official.

While the letters do contain a reference to the military recruiting office, their content is considered largely political in nature and do not pose any threat to the Capitol Hill community.

“There’s no link between that and the New York City incident,” said Sgt. Kimberly Schneider, a spokeswoman for the Capitol Police.

The Capitol Police department is working with the FBI on the investigation, which Schneider described on Friday as “ongoing.”

It is not known exactly how many letters — which reportedly say “We Did It” — have arrived on Capitol Hill, although they apparently were sent to the offices of New York Democrats.

“All of the letters have properly passed through Congressional mail security screening procedures before arriving at various Congressional Offices and have been determined to be safe,” according to an e-mail alert sent out by the Senate Sergeant-at-Arms on Thursday evening.

The letters have been manila in color and are about 5 inches by 8 inches in size, the e-mail reads. Two $1 stamps are affixed to the envelopes, along with a white label with a return address.

Security officials have told Capitol Hill staffers to immediately contact the Capitol Police should a similar letter reach their office.

“The Command Center will have an officer dispatched to your office to take possession of the letter,” the e-mail reads.

— Elizabeth Brotherton