* Govt, top general accept talks, no answer from opposition
* General talks of “assassination” bid as 3 killed in Sanaa
* Washington steps up pressure on Saleh for power transfer
(Adds tribesmen attack power plant, paragraph 13)
By Mohamed Sudam and Mohammed Ghobari
SANAA, April 5 (Reuters) - Yemen’s President Ali Abdullah Saleh urged the opposition to join talks in Saudi Arabia to try to end weeks of turmoil and violence in which at least three more people were killed on Tuesday.
Faced with mass demonstrations demanding an end to his 32-year rule, Saleh is clinging to power in the poorest country in the Middle East, from which al Qaeda has planned attacks on the United States.
The Gulf Cooperation Council (GCC) invited government and opposition representatives on Monday to talks in Saudi Arabia, at a date yet to be set, with the United States pressing the veteran political survivor to negotiate with his opponents.
Saleh, who ignored a transition-of-power plan offered by the opposition on Saturday, accepted the Arab Gulf states’ invitation on Tuesday and urged the opposition to follow suit.
“I promise that we will make every effort to return things to normal through talks with rational people from the Joint Meetings Party,” he said, referring to the opposition coalition.
“We repeat our invitation to them to sit at the table of dialogue and we call for a restraint from violence.”
Aides to a prominent general, Ali Mohsen, who turned against Saleh last month, said he had also accepted the call for talks in Saudi Arabia. But the coalition was non-committal.
“We welcome the (GCC) position on respecting the Yemeni people’s choices and we will also welcome any efforts made for the sake of President Saleh’s speedy departure,” Joint Meeting Parties coalition spokesman Mohammed al-Sabri said.
The United States has long seen Saleh as a pivotal ally in its fight against al Qaeda. In return for billions of dollars in military aid, he has pledged to fight militants and allowed unpopular U.S. air strikes on their camps.
But on Monday U.S. officials said Washington was ratcheting up pressure on Saleh to work towards a power transition plan.
On Tuesday, the Pentagon said the United States was calling for a negotiated transition in Yemen “as quickly as possible”.
"Obviously the situation right now is a difficult one. The longer it festers, the more difficult it becomes," Pentagon Press Secretary Geoff Morrell said. <^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Analysis on Saudi role [ID:nLDE7331DG] Timeline on Saleh's rule [ID:nLDE72K16E] Interactive graphic on Yemen link.reuters.com/puk87r ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^>
As unrest continued, tribesmen fired rocket-propelled grenades at a power plant in the central Maarib province, cutting electricity to large areas, a government official said, accusing the opposition of being behind the attack.
Three people died and 15 were wounded earlier on Tuesday when Saleh backers clashed with protesters, the defence ministry said. General Mohsen said the incident was an attempt to assassinate him.
A statement said Mohsen came out to meet tribal mediators sent by Saleh and snipers then opened fire. “The issue appeared to be a trick to assassinate Ali Mohsen, intermediaries and a group of tribal sheikhs,” it said.
General Mohsen later issued a statement accusing military and security forces loyal to Saleh of undertaking a “constant escalation aimed at provoking ... the military forces that support the youth movement (protesters)”.
Some diplomats in Saudi Arabia have suggested Riyadh wants Mohsen to replace Saleh, though the general has said he is not interested in taking power. Civil society opposition groups say Mohsen, 70, an Islamist, is tainted by his kinship and long-time association with the veteran ruler.
More than 100 people have been killed since anti-government protests began in Yemen, including the March 18 killings of 52 anti-government protesters by rooftop snipers in Sanaa.
That incident, which led Saleh to declare a state of emergency, prompted top Yemeni generals, ambassadors and some tribes to back the protesters, in a major blow to the president.
Opposition sources say talks have stalled because Saleh is manoeuvring to ensure he and his family do not face prosecution over corruption accusations raised by the opposition. Many demonstrators are sceptical about the GCC talks.
“The initiative came too late, it’s useless. It’s just an attempt to save the regime, which knows very well that it needs to go,” said Abdulsitar Mohammed, a youth activist in Sanaa.
On Monday security forces and armed men in civilian clothes fired on protesters in Taiz, south of Sanaa, and the Red Sea port of Hudaida, killing 21 people.
On Tuesday, security forces and armed men again attacked a crowd of tens of thousands of protesters in Taiz, residents said, and protesters responded by hurling rocks.
Doctors told Reuters around 30 protesters were wounded by gunfire and beatings. Around 300 were wounded in total, they said, most suffering from tear gas inhalation.
“We were walking down the street peacefully but the thugs came after us with bats and knives and guns. They beat us and fired on us,” a protester told Reuters by telephone.
Tribesmen kidnapped two soldiers in Lowdar, a southern city in the flashpoint Abyan province where militants also operate, a local official said. Earlier on Tuesday, officials said they found the bodies of two soldiers shot outside Lowdar.
Frustration with Saleh’s intransigence may push Yemenis, many of them heavily armed and no strangers to wars and insurgencies, closer to a violent power struggle.
“I think Saleh will fall within a week,” said Yemeni analyst Ali Seif Hassan. “Especially after what happened in Taiz. The people cannot stand it any more. They are not going to wait in their tents after they saw so many of their peers killed.” (Additional reporting by Khaled al-Mahdi, Mohammed Mukhashaf and Arshad Mohammed; Writing by Erika Solomon; Editing by Mark Trevelyan and Susan Fenton)