Spurs laid siege to the Luton goal after restoring parity, but a series of crucial last-ditch challenges kept Ange Postecoglou's team at bay - and Alfie Doughty somehow prevented Johnson's close-range effort from rolling over the line.
He was reportedly shot five times on the chest at closerange. The deceased, his wife and three children were reportedly returning back from church, The Transforming Church, Galadimawa, when they were attacked.
City levelled before the break as captain Ilkay Gundogan stabbed home from closerange. Kane finished off a Heung-Min Son pass as Antonio Conte's men retook the lead, but Riyad Mahrez fired home a stoppage-time penalty.
The 26-year-old midfielder powered the Blues to victory after converting a close-range chance from Willian's cross in the 63rd minute of the encounter at the King Power Stadium.
The breakthrough came when Stephan El Shaarawy set up Romelu Lukaku, who calmly found the back of the net from closerange. Moments later, Lukaku turned provider, assisting Lorenzo Pellegrini, whose finish doubled Roma's lead.
Smith Rowe and Havertz both forced close-range saves from Kaminski as Arsenal turned the screw, eventually getting their second goal via Hashioka deflecting Trossard's cutback into his own net.
James Ward-Prowse finished from a closerange, only for Lacazette to 'stab' home deep into added time. Emery's men were booed off by fans, who have seen their side winning just two of their last 11 Premier League games.
The hosts, however, over-ran City after the break with Willian scoring from closerange and Gary Cahill putting the result beyond doubt with a powerful finish from Fernando's poor clearance.
Jota converted the opener from closerange in the first half and celebrated with a show of solidarity to Luis Diaz, holding up the absent winger's shirt following the news of his parents' kidnapping in Colombia.
Semenyo capitalized on a mistake by Joelinton, dispossessing the Brazilian before driving into the box and delivering a low cross that Tavernier tapped in from closerange, giving the hosts a deserved lead.