URUMQI: Authorities in Xinjiang Uygur Autonomous Region confirmed Wednesday that innocent civilians accounted for 156 of the 197 deaths in the Urumqi riot a month ago.  Â
Twelve others were shot while committing violence or criminal activities. The identities of the remainder deaths have yet to be determined. Â Â
Hou also denied foreign media report that an associate professor of the ethnic Uygur at Beijing's Minzu University has been detained in connection with the Urumqi riot.  Â
"Further investigations show no teaching staff of ethnic Uygurs has been interrogated in connection with the Urumqi unrest on July 5," said Hou. Â
According to Chen Zhuangwei, head of the Public Security Department of Urumqi, 718 people have been detained who are suspected of involvement in the July 5 riot, which left 197 people dead and more than 1,600 injured. Â
Eighty three people had been arrested in connection with the riot, said Procurator Utiku'er Abudrehman of the People's Procuratorate of Urumqi City Tuesday.