A complaint filed Tuesday in Delaware federal court has offered the first detailed account from an inmate who claimed to be in James T. Vaughn Correctional Center’s Building C during a nearly 19-hour prison takeover that left a corrections officer dead earlier this month.

The prisoner, Donald Parkell, described a chaotic ordeal, in which “no more than” 10 inmates coordinated the Feb. 1 siege, taking four Department of Correction employees hostage, barricading the facility and setting fires throughout the building.