Arrest reports for November 29: Mark Eric Dempsey, 46, 105 Arega Street, Sebastian; Arrest location: 9900 US Highway 1, Sebastian; Arresting agency: Indian River County Sheriff’s Office; Held on $7,500 bond; Charges: Misdemeanor trespass at a posted construction site and felony possession burglary tools.Keith O’Brien, 38, 1118 West Edgewater Drive, Gilbert; Arrest location: 9900 US Highway 1, Sebastian; Arresting agency: Indian River County Sheriff’s Office; Held on $7,500 bond; Charges: Misdemeanor trespass at a posted construction site and felony possession burglary tools.Patrick O’Brien, 31, 4 Indigo Run Drive, Hilton Head, S.C.; Arrest location: 9900 US Highway 1, Sebastian; Arresting agency: Indian River County Sheriff’s Office; Held on $7,500 bond; Charges: Misdemeanor trespass at a posted construction site and felony possession burglary tools.Arrest reports are compiled through information provided online by the Indian River County Sheriff’s Office.