A rights groups says an Iranian blogger convicted of insulting the country's ruling clerics has died in Tehran's main prison. The International Campaign for Human Rights in Iran says 29-year-old Omid Mirsayafi died Wednesday at Evin prison. It says in a statement issued Thursday that it learned of his death from the blogger's lawyer. The lawyer, Mohammad Ali Dadkhah, couldn't be reached for further details. There was no immediate comment from Iranian authorities. The rights group says Mirasayfi suffered from severe depression and died after falling ill. No other details were available. Mirsayafi was sentenced last month to 30 months in prison after being convicted of insulting Iran's top officials in his blog.