To be able to apply for Swedish citizenship you cannot already be Swedish? Please explain your question or problem more specific to us to be able to answer your question. When you choose form regarding of what your application is about, the one that you have written to now is only for ongoing technical applications. Regarding the fact that your parents are dead, you can submit this under other information that they are no longer alive.
Yours sincerely
Leman Dogan
The Customer Service
Swedish Migration Agency
Please, note that you can not replay to this message. If you have further questions, please use the form on our website www.migrationsverket.se/e-post and send us a new message.