The Princes Kill Their Father!!

King Malcom was found dead. The whole thing looked like a set up by who ever did it. They tried to make it look like the guards were responsible for the murder of the king. When he was found this upset Macbeth so much that he murdered the two guards that they thought were responsible. Come to find out the princes have fled the country. Why would they do this unless they were responsible for it. I cant believe that they would murder their own father just to to become king.