Rather than discuss his straight-sets win over Russian tearaway Karen Khachanov in the on-court interview post-match, he chose to address the crowd about more serious matters.
The big-hitting Khachanov had beaten Tomas Berdych and John Isner en route to a maiden last-16 grand slam appearance, but world number one Murray's game was an altogether different task and the Briton emerged a deserved 6-3 6-4 6-4 victor.
"Obviously there was a bad tragedy in London, and in Manchester six or seven days ago".
"I'm sure everybody will join me in sharing thoughts and prayers for everyone who's been affected by this. I am grateful that I can still perform in front of everyone".
Swiss third seed Stan Wawrinka's powerful groundstrokes were too much to handle for France's Gael Monfils as the 2015 champion booked a last eight spot with a 7-5 7-6 (7) 6-2 victory.More news: Lone voice among Dems: Schumer slams Trump's 'failure' on embassy move
He did not even have to complete his match yesterday, with opponent Kevin Anderson pulling out when trailing 6-3 3-0 with a thigh injury.
Nishikori, the eighth seed from Japan, won just 13 points in a freaky first set against the Spaniard, but won the deciding fourth set in just 22 minutes.
In the women's category, Halep defeated 21st-seeded C. Suarez Navarro of Spain 6-1, 6-1 and Garcia defeated fellow compatriot Alize Cornet 6-2, 6-4 in an all-French affair again on Philippe-Chatrier. This is the first time Suarez has lost on clay against Halep, who is keeping her momentum after winning in Madrid and reaching the final in Rome, reports Efe.
"I was expecting a tough game against a very good claycourt player", Halep said.
- Madrid Open champion Halep will play in the last eight at Roland Garros for the second time after finishing runner-up in 2014.
The 25-year-old Halep will tackle Ukraine's fifth seed Elina Svitolina for a semi-final place. Wasn't easy. But each match I feel like I played better.
"I said after the last match, what's important is what you're thinking before the following points", Murray added.More news: Nadal, Djokovic cruise as Muguruza downs ex-champ
Despite Murray's current form, Nadal remains the outstanding favourite to claim a 10 title at the French Open having stormed into the last eight for the loss of just 20 games.
The Scot stumbled in the second set by handing a break back with some sloppy play, but reasserted his dominance immediately and banked the insurance of a two set lead.
Later Monday, Czech world No. 2 Karolina Pliskova, also in the running to become both a first time major victor and the new world No. 1, took on Veronica Cepede Royg in her last-16 tie.
A review of the action from the men's singles on day nine of the French Open at Roland Garros.
(28) Caroline Garcia bt.
The only other was Rossana de los Rios in Paris 17 years ago.
In 2015, Nishikori reached the quarterfinals at the major tournament. And while that may be ludicrous to say of a three-time Grand Slam victor and world No. 1, he was written off by plenty before a ball was struck at this French Open. There was so many long rallies.More news: House Intel Sends Unmasking Subpoenas As Russia Probe Escalates