FC Barcelona (Futbol Club Barcelona) is the latest victim of the pro Syrian hackers, Syrian Electronic Army hijacked today the Official twitter Account of FC Barcelona, Syrian Electronic Army fired several tweets from three of the Official twitter account of FC Barcelona.
Within the compromised accounts are Official Twitter Feed of FC Barcelona in English Version @FCBarcelona, Twitter Feed of FC Barcelona in Spanish @FCBarcelona_es and Twitter Feed of FC Barcelona in Catalan @FCBarcelona_cat 

One of the tweets, tweeted by SEA from FC Barcelona Accounts reads,

Dear FC Barcelona management, Don’t let the Qatari money funds you, it’s full of blood and kill via @Official_SEA16 #SEA #FCB

 (Screenshot taken from Official FC Barcelona Twitter Account ? Techworm)
At the time of writing the Article, tweets were removed from the Twtiter Accounts, but we were able to capture the screens before it was removed.
It is still not clear that how Syrian Electronic Army managed to hijack the accounts, looking behind the previous hacks of SEA, it could be possibly a Phishing attack. 
while the attack seems to have ended over FC Barcelona, Syrian Electronic Army have also said that they are not yet over with The Forbes.

Update :  FC Barcelona has restored control over its Twitter account as of now

This twitter account has been used fraudulently. The improper tweets have been removed. We apologise for any inconvenience
— FC Barcelona (@FCBarcelona) February 19, 2014