The half brother of former senator Scott Brown (R-Mass.) was arrested on Thursday for allegedly impersonating a Coast Guard official, and officers recovered extensive ammunition from his car.

Bruce W. Browne was arrested shortly before 6:30 p.m. after a resident of Old Lyme, Conn., reported that a man in a military-style uniform was walking down the street with a gun and that the man had been driving a "police type vehicle."

Browne later acknowledged that the Crown Victoria -- a typical police car -- belonged to him and that he had been walking down the street with a holstered 9mm pistol. The police discovered more handguns in the car, along with more than 200 bullets, a bulletproof vest with the word "Police" on it, and a Transportation Security Administration badge.

Browne, who spells his last name differently than his brother for reasons that aren't clear, owns a security company.

The police said Browne had stopped three boats during the day and asked the owners for their registration and safety information. He is formerly a reserve member of the Coast Guard, but his Coast Guard identification card was expired, and records show he is not affiliated with either the Coast Guard or the TSA.

Browne was charged on multiple counts, including impersonating a police officer and possession of a dangerous weapon in a motor vehicle. He was released on $50,000 bond and is set to appear in court on Aug. 22.

Scott Brown lost his Senate seat in November's elections but is considered a potential candidate for governor or Senate in 2014.

Browne in the past has even toyed with the idea of running for office himself.

Update 1:19 p.m.: Scott Brown weighs in with a statement on his Facebook page, noting that he's not close with his half-brother.

"For those of you who are asking about the news reports on my estranged half brother, I only know as much as you. I read about it in the news this morning. As you many of you know, my mom and my late father were married and divorced 4 times each. Unfortunately, we were not close as a family. These are serious charges and he will need to answer them. I feel badly for his children and I am thankful that no one was injured.