A man has been arrested on suspicion of stealing 900 tickets for the upcoming FA Cup football semi-final between Manchester City and Manchester United at Wembley Stadium.
Two special delivery bags containing the tickets were stolen from a Royal Mail van close to City's ground in Manchester on Saturday.
The Greater Manchester Police say they've arrested a 39-year-old man on suspicion of theft on Wednesday after a number of addresses were raided.
He has been bailed pending further inquiries.
Police say they feared the tickets for the derby clash between the fierce rivals on April the 16th were to be sold on the black market.
No tickets have so far been recovered by police.
In a statement on their website (www.mcfc.co.uk), Manchester City said: "All supporters impacted by the theft will be contacted by the club in the coming days adding only tickets purchased direct from the club will be valid for the game."