A Melbourne man was arrested after deputies said he threatened to kill Sanford Police Chief Bill Lee.
Brevard County Sheriff's deputies arrested John Stewart, 68, on Friday.
Stewart is charged with one count of written threats to kill or do bodily harm.
Deputies said Stewart sent the email to Lee's work account on Thursday morning with the subject line, "Coming after you."
DOCUMENT: Stewart's email to Lee
In the email, Stewart referenced the Trayvon Martin fatal shooting, and told Lee, "I have more weapons than your entire police department and I would love to use some of them just to take you down."
On Thursday, Lee temporarily stepped down because he had become a distraction to the case.
Deputies said Stewart admitted to sending the email to Lee.
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Investigators found more threatening emails after a search of Stewart's computer.
Stewart had been investigated for similar messages before. Stewart sent threatening messages to Penn State assistant football coach Mike McQueary, according to investigators.
Stewart was booked on $10,000 bond.
According to the conditions of his bond, Stewart will be placed on electronic monitoring, be prohibited from using any device than can receive or send emails, and cannot contact Lee or his family, or come within 1,500 feet of the Stanford Police Department.