There was an attempted robbery this morning at the McDonalds on Avenue M West in Fort Dodge. At approximately 3:30am, a male wearing a mask and armed with a knife demanded money from night manager Christopher Gerrard. Gerrard began yelling for help, and witnesses responded. The man, and a second male both fled the scene without the money. Information from witnesses led to the arrest of two suspects: 21 year old Colby Lee Kirby and David Michael Van Horn, both of Fort Dodge. Each was charged with robbery in the first degree, which is a Class B Felony. Detectives are continuing their investigation. Anyone with any additional information should call the Fort Dodge Police Department at 573-14-26.