The newly created Martha’s Vineyard Tactical Response Team was dispatched for the first time on Saturday to assist West Tisbury police with a warrant arrest of a man with a history of violent crime.

On Friday police were notified by the Barnstable superior court probation department of a probation warrant for William F. Campbell, who lives on Great Pond Road. Police said that Mr. Campbell had violated probation by not keeping his personal tracking unit on; his whereabouts were unknown.

Island police reported a busy weekend, among other things making a number of drunk driving arrests and breaking up several loud and disruptive parties.

Aquinnah chief Randhi Belain said police received a call around 1:30 p.m. from a sunbather who found an unusually large fish on the shore between Philbin Beach and the property owned by the Martha’s Vineyard Land Bank. When police arrived they found what appeared to be a 20-foot shark.

Oak Bluffs police had a busy weekend, among other things responding to a fight on Circuit avenue that involved up to ten people, a wide-ranging vandalism spree and a disruptive house party that led to a fracas with officers and multiple arrests.

Lieutenant Timothy Williamson said police responded to a call of a domestic disturbance on Summit avenue on Friday afternoon that led to the arrest of Mark Alger, 46, of Hyannis. Mr. Alger was charged with domestic assault and battery and threatening to commit a crime.

Eating ice cream is a familiar pastime on Memorial Day weekend, but for Zachary Gould, 25, of Oak Bluffs, who had a sweet tooth and apparently too much to drink, the temptation to grab some soft-serve proved to be criminal.

Edgartown police yesterday arrested Mr. Gould, who smashed in the back door of the Dairy Queen on Upper Main street early Saturday morning.

An investigation is under way into claims by a Tisbury policewoman that she was sexually harassed by a fellow officer and then subjected to retaliatory action from the police chief and town administrator when she complained about it.

In a detailed complaint, filed with the Massachusetts Commission Against Discrimination (MCAD) on April 28, Kelly R. Kershaw said she believed her alleged harasser, Sgt. Timothy Stobie, chief John Cashin and the town were trying to force her from her job.