(Updated) – First-degree murder charges have been filed against two people from Decorah, in connection with an assault this summer. Authorities say 18-year-old Dalton Adam and 17-year-old Jacob Seelinger were charged in a July 12th attack on 46-year old David Hansen, of Decorah. Hansen died of injuries suffered during the attack, on August 30th. Before the charges were upgraded, Adam and Seelinger both entered not guilty pleas to willful injury and attempted murder.  Records show the teen and Adam had already pleaded not guilty to charges of attempted murder and other crimes.

(Radio Iowa & the A-P contributed to this story)