Southampton have struck five first-half goals past Aston Villa, with Sadio Mane scoring the fastest hat-trick in Premier League history.

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The home side had a goal disallowed early on, with Graziano Pelle wrongly adjudged to have been offside after going through clear on goal.

Mane scored his first after 13 minutes when the winger latched on to Pelle's header, and tapped into the empty net after the ball ricocheted off Shay Given.

The Senegal international grabbed his second a minute later with another tap-in when Ron Vlaar's poor backpass was intercepted.

Mane sealed his hat-trick with a curled effort that evaded Given from the edge of the box.

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Shane Long scored his first of the afternoon after striking into an empty net, following Given's save from Mane's initial attempt.

The Irishman's second came six minutes before half time, curling a 35-yard strike past Given to give the home side an unassailable lead.

Christian Benteke got one back for the visitors just before the break with a header from Leandro Bacuna's cross.