Manchester City produced an impressive second-half display to see off brave Southampton at St Mary's and book their place in the FA Cup semi finals.
Raheem Sterling put City ahead before Aymeric Laporte's own goal restored parity at half-time.
The visitors broke the Saints' resistance through Kevin de Bruyne's penalty just past the hour mark.
Two goals from substitutes Phil Foden and Riyad Mahrez rounded off what for long periods was a tough afternoon.
More to follow.
