The protests have been stunning in their ferocity and geographic reach, spreading to far-flung towns and cities that are strongholds of the middle and working classes.
State television said six of the latest casualties occurred during an attack on a police station in the town of Qahdarijan. The clashes were allegedly sparked by protesters who tried to steal guns from the station.
An 11-year-old boy and a 20-year-old man were killed in the town of Khomeinishahr, and a member of the Revolutionary Guard was killed in the town of Najafabad, state television also reported.
A semi-official news agency reported Tuesday that 450 people have been arrested in Tehran since Saturday. The ILNA news agency cited Ali Asghar Nasserbakht, a security deputy governor of Tehran, in its report.