UEFA have released the following statement
"The UEFA Control, Ethics and Disciplinary Body (CEDB) has announced the following decision:
"Match: UEFA Champions League Round of 16 match between Manchester City FC and AS Monaco (5-3), played on 21 February in England
"Decision: Manchester City FC have been fined €18,000.
"The charges against Manchester City FC were related to field invasion by supporters - Art. 16 (2) DR, throwing of objects - Art. 16 (2) DR and late kick-off - Art. 11 (2) DR."