Socceroos goalkeeper Federici apolgises for Wembley blunder

Reading goalkeeper Adam Federici has taken to Twitter to say sorry to fans for his crucial gaffe in Sunday's (AEST) FA Cup semi-final defeat to Arsenal.

Reading goalkeeper Adam Federici was distraught after the FA Cup loss to Arsenal. (Getty) Source: Getty Images

With the game finishing 1-1 after 90 minutes, the Australian inexplicably let a tame Alexis Sanchez shot slip through his grasp in the sixth minute of extra-time and could only watch on as it trickled over the line, allowing the Gunners to book a second successive final appearance.

The 30 year-old, who was "inconsolable" after the match, has received unwavering support from his manager and team-mates but issued an apology to Reading's fans.

Steve Clarke's men, in the lower reaches of the English Championship, forced extra-time after Garath McCleary's second-half volley cancelled out Sanchez's opener.