Manchester United boss Jose Mourinho revelled in his side moving within touching distance of the Champions League knockout stage following Wednesday's thrashing of CSKA Moscow.
In the city where they secured their third and most recent Champions League triumph, Romelu Lukaku maintained his prodigious record in front of goal with a first-half double, while Anthony Martial converted a penalty and Henrikh Mkhitaryan also netted.
Victory for United, who had won just one of their previous 10 away games in the competition, boosted their stranglehold on top spot in Group A, where they sit three points clear of FC Basel and CSKA.
“We are in a good position with four matches to play. We are almost there,” said Mourinho, who proceeded to heap praise on the goal-hungry Lukaku. “We know he is a very good player who can score lots of goals. I have to admit that he is scoring really important goals in nearly every game.”
United opened the scoring on four minutes when Lukaku climbed above CSKA's Sergei Ignashevich to meet a Martial cross and power home a downward header.
The lively Mkhitaryan was then upended in the penalty box by full-back Georgy Schennikov, which enabled Martial to score the resulting spot-kick with a nonchalant side-foot.
United stretched their lead on 26 minutes when Martial’s inswinging cross was inexplicably missed by Vasili Berezutski, allowing Lukaku to apply a close-range finish – his 10th goal in nine games.
Mkhitaryan added a fourth shortly before the hour mark, while CSKA's Konstantin Kuchaev netted a consolation.