After terrorist attacks in the province of Sistan-Baluchistan, about 40 people were arrested with the assistance of local residents and security officials, deputy head of Iran's Police Ahmad Reza Radan said, Mehr agency reported.
He said that there were two police officers among the dead. Abut 10 were injured. Their condition is extremely grave.
Radan also sent a warning to his western neighbors - Afghanistan and Pakistan that Tehran's patience may be exhausted at any time.
Otherwise, if these countries do not take timely actions, Iran will take advantage of its right to fight against the militants who were hiding in neighboring countries and pose a threat to Iran, Radan said.
Two suicide bombers detonated an explosive device on the night of July 16 in Zahidan in front of the mosque "Jami". The attack killed 27 people, injured 270 people, 11 of them are in critical condition.
According to Dubai TV channel Al-Arabiya, "Jundullah" group ("Warriors of Allah") took the responsibility for the attack in response to the execution of the leader of this group Abdolmalek Rigi.
The last major terrorist attack was an explosion in south-eastern Iran in October 2009 killed nearly 50 people. The organization took the responsibility for the terror act.