Manchester City's Premier League title challenge suffered a major setback after Nottingham Forest claimed a memorable 3-1 victory at the City Ground, with Liam Delap scoring twice.

The result marked Forest's first home league victory of the season and left City six points behind leaders Arsenal, who had beaten Hull City 1-0 earlier in the day.

Forest made the most of defensive mistakes to establish a two-goal advantage before the break.

Jair Cunha opened the scoring after taking possession from Josko Gvardiol, who lost the ball following a heavy touch.

The Brazilian carried it towards the penalty area before sending a low finish into the corner.

City's problems continued when Xaver Schlager won possession in a midfield challenge against Elliot Anderson.

He released Delap, who drove forward from the halfway line before beating Gianluigi Donnarumma with a powerful strike.

The visitors had opportunities to respond before the interval, but Erling Haaland saw his effort cleared off the line, while Enzo Fernandez failed to make the most of a headed chance.

Manchester City reduced the deficit shortly after the restart through Rayan Cherki, whose excellent half-volley gave them renewed hope of salvaging something from the contest.

However, Forest refused to surrender their advantage. Morgan Gibbs-White led a counter-attack before Delap produced an impressive curling finish into the top corner to complete his brace and secure the points.

The defeat leaves City second on the standings, six points behind Arsenal. Forest, meanwhile, climbed to 16th, moving two points clear of the relegation zone.