WPTV's James Bailey

INDIAN RIVER COUNTY, Fla. — The Indian River County Sheriff's Office is investigating the circumstances that led to Friday's deadly shooting while mourning the loss of Sgt. Terri Sweeting-Mashkow.

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Sweeting-Mashkow was serving an eviction notice Friday morning along with Deputy Florentino "Tino" Arizpe when the man they were attempting to serve retrieved a weapon and opened fire. Sweeting-Mashkow and locksmith David Long, who was accompanying law enforcement, were killed. Arizpe was injured and released from the hospital over the weekend. A third deputy, Sgt. Gary Farless, was present but not injured.

Michael Halberstam, the suspected gunman, was also shot when

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