The nephew of Mir Hossein Mousavi, the Iranian opposition leader, has reportedly been killed in violence surrounding street protests in Tehran during the Shia festival of Ashoura.
Seyyed Ali Mousavi is thought to be among up to eight people reported killed during the protests, which comments on social networking websites suggested would continue into Monday.
The Parlemannews website said Mousavi's 35-year-old nephew was shot near his heart during clashes at Enghelab square "and was martyred after he was taken to Ebnesina hospital".
State television reported that "unknown assailants" had killed Mousavi's nephew, naming him as Ali Habibi Mousavi Khamene.
Opposition websites reported police had fired into crowds of demonstrators in central Tehran during Sunday's protests and witnesses said dozens of protesters were wounded in the police crackdowns.
The reports could not be independently verified because foreign media are banned from covering protests.
Deaths confirmed
Ahmad Reza Radan, Iran's deputy police chief, said that more than 300 protesters had been arrested and acknowledged that "several people" had been killed, but said police had not used guns to contain the protests.
Referring to four of the deaths, Radan said: "One fell off a bridge, two died in car accidents and one was killed by a bullet."
"As the police was not using firearms this [death] is suspicious and it is being investigated," he said.
Opposition leaders criticized the government for the killings in what are some of the bloodiest confrontations in Iran since the demonstrations that followed the disputed June 12 presidential poll.
'We fight and we die'
Video footage posted on the internet, said to be from the protests, showed protesters running away from riot police or Basij militias on motorbikes.
Witnesses said protesters fought back against the security forces, pelting them with stones and chanting: "We fight and we die to get back Iran."
Several policemen were reportedly beaten up and their pick-up trucks set on fire, witnesses said.
The Jaras website said that unrest spread to other parts of Iran, including the city of Qom, Shiraz, Isfahan, Najafabad, Mashhad and Babol.
Payam Akhavan, an international law professor based in Montreal and the co-founder of the Iran Human Rights Documentation Centre, said that Sunday's protests were a further manifestation of the discontent felt over the June poll.
PHOTO CAPTION
Iranian security forces are kicked and pushed by opposition protesters during clashes in Tehran.
Agencies