Protests broke out Monday at a university in Tehran, Iran, where President Mahmoud Ahmadinejad made a visit for an awards ceremony.
Members of the Islamic republic's opposition movement chanted anti-government slogans aimed at Ahmadinejad's hard-line regime outside Shahid Beheshti University in northern Tehran.
Video showed minor skirmishes breaking out between protesters and security, but no major clashes were evident.
The protests come a day after state media reported that five people, convicted of "anti-revolutionary" activities, were executed over the weekend.
Among the slogans chanted at Monday's protest, demonstrators yelled, "You are sucking the blood from our country."
The opposition movement gained momentum last summer following the disputed presidential election in which Ahmadinejad decisively defeated opposition candidates Mir Hossein Moussavi and Mehdi Karrubi. The two opposition leaders accused the government of stealing the elections.
Moussavi and Karrubi have called for more demonstrations on June 12, the first anniversary of the disputed election.