Jailed DAPL protester released and re-subpoenaed in apparent grand jury investigation The arrest of Steve Martinez, a 46-year-old Bismarck resident, three weeks ago signaled that a federal investigation into a 2016 clash between DAPL protesters and law enforcement was still ongoing. Written By: Adam Willis | × Law enforcement officers face off against Dakota Access Pipeline protesters on Nov. 20, 2016, at the Backwater Bridge along Highway 1806. Submitted photo from Morton County BISMARCK — A Dakota Access Pipeline protester who was jailed earlier this month for refusing to comply with a grand jury investigation was released Monday, Feb. 22, on a judge's orders. The arrest of Steve Martinez, a 46-year-old Bismarck resident, three weeks ago signaled that a federal investigation into a 2016 clash between DAPL protesters and law enforcement was still ongoing, and attorneys for the newly-released protester said he was re-subpoenaed before getting out of jail for another grand jury appearance on March 3.