Monaco striker Radamel Falcao has expressed his sympathy for Borussia Dortmund's players after they were forced to play just 24 hours after the team bus was attacked outside the team hotel.
The bus was targeted by three bomb blasts on Tuesday, with Marc Bartra requiring surgery on a broken wrist, but UEFA insisted they must play the game the following day, much to the anger of Dortmund boss Thomas Tuchel.
Dortmund appeared to have their minds elsewhere as Monaco took a 2-0 half-time lead that would have been 3-0 but for Fabinho missing a 17th-minute penalty, the first spot kick the Brazil international has failed to convert for Monaco in 18 attempts.
"It was difficult to deal with everything that happened," Falcao, who captained Monaco, said. "We stayed very focused for two days for this game, the attacks perhaps changed the [Dortmund] players' concentration. It's difficult for the Dortmund players, a player was injured, but UEFA decided that we had to play."
Dortmund hit back in the second-half with goals from Ousmane Dembele and Shinji Kagawa sandwiching a second strike of the night for Monaco's Kylian Mbappe, resulting in a 3-2 victory for the Ligue 1 leaders.
The 18-year-old, who was also fouled for by Sokratis for his side's penalty, now has four goals in the competition, and is only the fifth player to score in each of his first three knockout games in the competition's history.
"It was a difficult game overall because of our opponents and also the context," Mbappe said. "We tried to give the best of ourselves, I tried to give the best of myself. We leave with an advantage, not extremely big, but big all the same.
"I've always been told that when I get the ball, something has to happen. I try to apply myself every time I play. Today, it went for me. I hope it'll be like that every day.
"I'm a player, when you're under pressure, you have to keep a clear head, be calm. You can get carried away in a game like that. I knew that there would be a chance to take, and it was the second goal."
Mbappe, who scored twice in the round-of-16 win against Manchester City, said the security situation had affected Monaco too.
"We had to just submit to what happened. When you do that, it's tough. We got news, every half an hour. You're just waiting," he told reporters. "We heard that there had been an explosion, and then nothing more. We were worried, we feared the worst.
"I tried to call Ousmane [Dembele], he explained the situation, I told him that I was with him and his team, that we were all together in this. I tried to give Ousmane information, he gave me some too. I don't wish for anyone to go through that.
"The players were affected by what happened, very affected even. We're all with Bartra, we know it's difficult for him like for all the Dortmund players. We give them our full support.
"It knocks you, but we're professionals, we have to get used to everything, even to the most extreme conditions. Today was extreme and we tried to get ourselves up to the standard of a Champions League quarterfinal."