The Football Association is investigating a laser being shone at Manchester United’s Wayne Rooney during the League Cup defeat by Middlesbrough.

Television footage showed a green light appearing on Rooney’s face as he prepared to take his penalty.

The striker’s effort was saved by Boro goalkeeper Tomas Mejias and United were beaten 3-1 in the shoot-out after the game finished 0-0 following extra-time.

The FA said it is aware of reports of the incident and is looking into it.

The penalties were taken at the end of Old Trafford housing the away supporters.

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