Manchester city score FOUR in derby demolition of United as Kevin De Bruyne and Riyad Mahrez net twice as they moved 6 points clear of second place Liverpool.
De Bruyne put the champions ahead in the fifth minute, slotting home a low pulled back pass from Silva. But united drew level in the 28th minute through a superb curling shot from J.sancho.
But Belgian De Bruyne restored city lead finding the target after Phil Foden had powered into the area and seen his shot parried away by David De Gea.
City dominated the second half where Mahrez find the back of the net twice in 68th and 90+1 minutes. City has 69 points from 28 games at the top of the premier League table, with Liverpool on 2nd with 63 points from 27 games. Where as United slip down to fifth place a point behind Arsenal which has three games in hand.