The third goal was scored by Mahdi Tarmi in the 79th minute.
With this victory, Iran has 12 points from 5 matches and the Bahraini team has 12 points from six matches, compared to 14 points from five matches for Iraq from six matches, and 5 for Hong Kong and one point for Cambodia.
The next round of group competitions will be held next Friday, June 11, when Hong Kong meets Iraq, and Cambodia meets Iran.
The first place in each group qualifies for the final round of World Cup qualifiers, along with the four best second-placed teams in the eight groups. These teams also get the qualification for the 2023 Asian Cup finals in China.