Gulf States, European countries, and 'human rights advocates' all bear blame for deadly attack, according to Iran

AVA- Iran’s president has said his country knows who was behind Saturday’s attack on a military parade which killed at least 25 people, Iran’s official news agency (IRNA) reported.
“Those who are the so-called advocates of human rights have to be held accountable for the attack,” Hassan Rouhani told reporters in Tehran on Sunday before leaving for the 73rd UN General Assembly in New York.
“Iran undoubtedly will not give up [investigating] the crime,” IRNA quoted Rouhani as saying.
Rouhani said the attack was backed by organizations supported by late Iraqi President Saddam Hussein.
They were working for Saddam in Iraq when he was alive, and after his death they started working for another country, he told reporters.
Rouhani said there is a Gulf state that currently supports those organizations financially, militarily, and politically.
Over 60 people were also injured in Saturday’s attack in Ahvaz, southwestern Iran, in which gunmen wearing military uniforms fired at Iranian forces for about 10 minutes.
The casualties included a woman and a child, a journalist, and members of the Iranian Revolutionary Guards, according to IRNA.