A howler by goalkeeper Tim Krul helped set Arsenal on their way to a win that lifts them up to seventh as bottom club Norwich City’s hopes of staying in the Premier League faded further.

Dutchman Krul lost possession to Pierre-Emerick Aubameyang on the edge of his own penalty area for Arsenal’s opener, the Gabon forward whipping the ball from his feet to score his 18th top-flight goal of the season.

Aubameyang then turned provider for Swiss midfielder Granit Xhaka to sweep home his first club goal since March 2019 before Aubameyang added the third after a mistake by Josip Drmic.

Substitute Cedric Soares completed the rout, the substitute scoring from outside the penalty area four minutes after coming on for his Gunners debut.

Norwich, six points from safety with six games left, hit the woodwork through Ben Godfrey when the game was goalless, while Emiliano Martinez produced a fine save to keep out Kenny McLean’s free-kick