Manchester City increased the pressure on Mikel Arteta as the League Cup holders powered into the semi-finals with a 4-1 demolition of troubled Arsenal on Tuesday. City ensured it will be a miserable Christmas for beleaguered Arsenal boss Arteta by condemning his side to a fourth defeat in their last six games in all competitions. Gabriel Jesus took just three minutes to put City ahead at the Emirates Stadium and although Alexandre Lacazette equalised, it was another night of torture for Arteta. Arsenal's reserve keeper Alex Runarsson was made a horrendous mistake when he allowed Riyad Mahrez's free-kick to squirm into the net. Phil Foden and Aymeric Laporte piled on the pain for Arsenal with further goals to seal the rout.

"It's a hard one to take considering how the game went. This level of opponent, when you give the goals away it makes the game impossible," Arteta said. "A lot of strange things are happening in every game and that makes things really difficult. "Runarsson has not played a lot of games for us. We all make mistakes and have to support him." Languishing 15th in the Premier League after losing five of their last seven games -- their worst start to a season since 1974-75 -- Arsenal are in crisis. Amid talk of dressing room unrest, Arteta, who worked as Pep Guardiola's City assistant before joining Arsenal 12 months ago, will be in danger of the sack if Arsenal's wretched run continues into the new year.