LONDON: Arsenal kept alive their hopes of reaching the Champions League last 16 for a 16th straight season when they beat Dinamo Zagreb 3-0 while Bayern Munich did them a favour by thrashing Olympiakos Piraeus in Group F on Tuesday.

Arsenal ripped Dinamo apart in the first half, taking a grip with two goals in four minutes from Mesut Ozil in the 29th and Alexis Sanchez who scored in the 33rd before adding a third in the 69th.

The results mean that while Bayern are through to the knockout round, Arsenal, whose chances looked slim after defeats by Dinamo, Olympiakos and Bayern, will join them if they beat Olympiakos by two clear goals in Greece on Dec. 9.

The second half followed much the same pattern and, although Dinamo weaved some nice moves in midfield, they hardly created a chance to trouble Arsenal keeper Petr Cech.

At the other end, Cazorla, Olivier Giroud and the excellent Joel Campbell kept Eduardo busy in the visitors' goal, with Sanchez netting the third by rounding the keeper to finish the job.