TEHRAN, Iran — A senior commander in Iran's Revolutionary Guard has warned that his forces will be on watch for possible unrest after next month's presidential election, calling the outcome “unpredictable” and sending the strongest message yet against any attempts to revive street protests, media reported Sunday. The comments by Col. Rasool Sanaeirad point to a wide-ranging effort by Iranian authorities to intimidate opposition groups that could use the June 14 voting for possible political demonstrations. Pro-reform groups have been under relentless pressure and crackdowns since major protests following the disputed re-election of President Mahmoud Ahmadinejad in 2009. Ahmadinejad is not running in this election because Iran's constitution bars him from seeking a third term. But the entry of former President Akbar Hashemi Rafsanjani into the race has re-energized reformists and brought backlash from hard-liners. The Guardian Council, a group controlled by the ruling clerics, vets all candidates and a final ballot list is expected on Tuesday. Sanaeirad was quoted Sunday as saying the “election is unpredictable,” but did not elaborate. He also warned that a “possible riot in Tehran could spread” to other regions, claiming chances for turmoil are heightened because Iran is for the first time holding both presidential and municipal balloting at the same time. The remarks further suggest that more security controls could be imposed before the election, such as restrictions on the Internet, which was used as the critical tool by the opposition Green Movement in 2009.– AP