Lawrence police Tuesday afternoon arrested a 23-year-old Lawrence man on suspicion of aggravated assault and criminal damage to property. Kim Murphree, a police spokeswoman, said the man was arrested after a family dispute early Tuesday morning in the 2500 block of Crestline Place. He was accused of threatening another resident of the home with a knife, but no one was injured. Douglas County prosecutors will make a decision about filing formal charges. The Journal-World generally does not identify suspects unless they are formally charged.