(Willmar, MN)  --  Three people were killed and two were injured in what appears to be a drunk-driving related crash just east of Willmar Friday night.  It happened around 9 p.m.  The state patrol says a mini-van driven by 68-year-old Marta Stoffers of Atwater was eastbound and collided head-on with a westbound pickup.  After the collision the van went into the ditch and burned.  Stoffers was killed, as was her daughter, 40-year-old Michelle Hoffman of Eden Prairie.  Hoffman's eight-year-old daughter Julia, and five-year-old son Jason, were taken to HCMC where Julia died.  Jason is in critical condition.  The driver of the pickup, a 21-year-old Norwood man, was treated for minor injuries, and is now in the Kandiyohi County Jail in Willmar.  The state patrol says alcohol was detected in his system.