Yemen's opposition accused the government of attempting to assassinate a leader of Al-Islah party on Wednesday by firing at his car in Sanaa, an opposition website said.
Mohammed Abdullah al-Yadumi's car was fired on about 2:00 pm (1000 GMT), said a statement attributed to the Common Forum of parliamentary opposition parties, carried on alsahwa-yemen.net, which is affiliated with Al-Islah, an Islamist opposition party.
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The Common Forum "holds the national security leadership, the head of the Republican Guards, the head of the special guards and the leader of central security responsible for this criminal event," the statement said.
The statement did not specify whether or not Yadumi, who heads the high commission of Al-Islah, was in the vehicle when it was fired upon.
Protesters have since January been calling for President Ali Abdullah Saleh, who has been in power since 1978, to quit power.
Saleh has been hospitalised in Saudi Arabia for blast wounds since early June, but Deputy Information Minister Abdo al-Janadi said on Saturday that Saleh will return home "soon."