Iran's Security Council has warned defeated presidential candidate Mir-Hossein Mousavi against 'the consequences' of backing street rallies, reported Press TV.
"It is your duty not to incite and invite the public to illegal gatherings; otherwise, you will be responsible for its consequences," Iran's Security Council, a body affiliated with the Interior Ministry replied Mousavi's letter in which he had criticized the law enforcement forces for failing to prevent attacks on protestors during the street rallies.
"It is your responsibility to prevent the public from attending such rallies instead of making accusations against the law enforcement," it added.
"We believe this is an organized network which is most probably affiliated to foreign-related groups and deliberately disturbs the peace and security of the public. Of course we have already ordered the law enforcement forces to deal with the issue," read the letter.
Mousavi had said the assailants, who appeared 'along with the law enforcement forces' during street rallies, have disturbed peace and security by attacking demonstrators and vandalizing public property.
Tehran's Governor General Morteza Tamaddon also said on Friday that no permission had been granted to Reformist groups to hold a rally on Saturday. Rallies have been scheduled for Saturday.
Mousavi and presidential contender Mehdi Karroubi have rejected the results as fraudulent and demanded a re-run of the election.
The Leader of the Islamic Revolution, Ayatollah Seyyed Ali Khamenei, has stressed that the vandals are not in any way related to the presidential candidates and their supporters.
However, Ayatollah Khamenei on Friday demanded an end to street protests and urged all candidates to pursue their complaints through legal channels and not street protests.
The Guardian Council, the body tasked with supervising the electoral process, says it has received 646 complaints from the three presidential candidates -- Karroubi, Mousavi and Mohsen Rezaei.
The body will hold a meeting with the three defeated candidates to discuss their objections on Saturday.