Tampa, Florida - The police have been called to Jill and Scott Kelley's home at 1005 Bayshore Blvd in Tampa several times over the past few years.

Jill Kelley is connected to the affair between Paula Broadwell and spy chief David Petraeus. Their affair came to light during an FBI investigation of "jealous" e-mails reportedly sent by Broadwell to Jill Kelley.

The FBI investigation began when Kelley went to FBI officials to complain that Broadwell was sending harassing e-mails to her, a U.S. official told CNN. Kelley received the worrisome e-mails in May, an official said, describing the messages as along the lines of "stay away from my guy," but not explicitly threatening.

According to a source with knowledge of the e-mails, the messages accused Kelley of untoward behavior with some generals at MacDill Air Force Base in Tampa, Florida where Kelley did volunteer work.

The e-mails detailed the "comings and goings of the generals and Ms. Kelley," said the source, who declined to speak on the record because of sensitivity of the investigation.

Among those believed to be referenced in the e-mails was Petraeus. Because parts of Petraeus' schedule were not public, the e-mails raised questions about whether the sender of the e-mails had access to his private schedule or other sensitive information.

The content of the e-mails was first reported by NBC News.

A senior official close to another military superstar ensnared in the controversy -- the commander of U.S. and NATO troops in Afghanistan, Gen. John Allen -- called Kelley a "bored, rich socialite involved with every single senior commander" because she did unpaid work as a military "honorary ambassador."

Kelley's role in the Petraeusscandal is growing by the hour.

The Pentagon said Tuesday that the investigation surrounding Petraeus and Broadwell has expanded to include Allen. Allen replaced Petraeus after he left that post to lead the CIA.

According to U.S. officials, the FBI has discovered between 20,000 and 30,000 pages of documents - most of them e-mails - that have "potentially inappropriate" correspondence between Kelley and Allen.

Some of the e-mails between Allen and Kelley might be described as "flirtatious," according to a defense official who was cleared to speak to the media.

However, the official told CNN that flirtatious could mean anything from "Hey, you look good in that dress the other night" to something more serious.

"There was no security information exchanged. There was nothing hateful in the messages," the official said. "It was not threatening."

Kelley, 37, and her husband Scott released a statement saying they have been friends with Petraeus and his family for more than five years and asked for privacy.

Although Kelley lives here in Tampa, Florida, she's known as a member of Washington's social circuit. Friends describe her as feeling like she is an "innocent victim."

Petraeus has denied having an affair with anyone other than Broadwell, according to a friend of the former general who has spoken with him since news of the affair broke.

Below are links to the reports issued by police for each call. (PDF)

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