The Yemeni opposition Sunday denied in a statement any links to a June attack on the presidential palace that injured President Ali Abdullah Saleh and other officials.
The statement of the opposition coalition Joint Meeting Parties (JMP) came a day after the wounded president was discharged from a Saudi military hospital in Riyadh, where he will spend some more days for recovering, Xinhua reported.
"We denounced any ruling party's charges that linked the opposition Joint Meeting Parties (JMP) to the June 3 bomb attack targeting the presidential palace and injuring Saleh along with other government officials," said the statement obtained by Xinhua.
"The June attack was used as a political blackmail to fail the seven-month youth protests," it said.
The ruling party has blamed the attack on the armed militants of the opposition-leading tribal leader Sheikh Sadiq al-Ahmar, as the attack took place a few days after the pitched street battles between al-Ahmar's militants and Saleh's forces in downtown Sanaa.
The battles, which claimed the lives of some 300 people from both sides, ended with a Saudi-brokered truce deal following Saleh 's departure to Riyadh.
"We call for an independent international investigation into the June attack and all the incidents of violence against the opposition protesters in sit-in squares in Sanaa and southern province of Taiz," the JMP said.
Saleh and some other high-ranking officials were sent to hospital in Riyadh a day after the attack that left 12 of Saleh's bodyguards and a government official dead.
The veteran president, who has faced protests demanding an immediate end to his 33-year rule for seven months, vowed earlier through the state media that he was planning to return to power to lead a national conciliation dialogue with the opposition JMP.