Its 1 for ay 2011- 12

can one file return for Ay 2011-12 in offline from anywhere,or one has to jurisdictional AO for filing it?

Detail situation:- An assessee forget to file itr 1 for 2011-12 (AY). Now he want to file it.He can do so in offline mode only. If he can file offline return from anywhere(currently placed in Bangalore in an IT compny)? If yes, Then what is the procedure? or he have to go to jurisdictional AO (delhi's Pan card) for filing ITR 1 offline??????

Thanking you