The BBC says it is "actively working to resolve" the apparent hacking of a number of accounts by a group claiming to be the Syrian Electronic Army.
We're aware that in the past few hours several BBC Twitter accounts have been hacked. We're actively working to resolve this asap.
The @BBCArabicOnline, @bbcradioulster and @bbcweather accounts all posted tweets relating to Syria and the Middle East.
Apologies to all our followers our account was hacked today.
More top news
Scottish leader Johann Lamont's resignation highlights the post-referendum divisions.
The remaining X Factor contestants face the judges tonight - with an exit predicted for at least one member of boy band Stereo Kicks.
Jack Bruce, the composer, singer and multi-instrumentalist, died today of liver disease at the age of 71.