Seniora called on three main opposition groups -- Hezbollah, Amal, and the Free Patriotic Movement -- to resolve problems through dialogues, said the report.

"The Lebanese are too smart to fall for this," he said of Monday night's protests. "Such actions have been tried before and have only worsened conditions and increased incitement."

But, Lebanese opposition was planning to escalate its protest actions starting from Thursday with a public transport strike, which is aimed to block roads to major cities in the country to force the population to stay in their homes, the Daily Star reported.

"Contacts are ongoing between the security forces and the opposition to prevent this dangerous plan from being implemented,"a security source was quoted as saying, adding that the opposition is planning to park vehicles in main access roads, take out the keys and leave.

The Lebanese security forces warned that it would not permit attacks on public property or the blocking of roads, said the report.

On Monday night, angry demonstrators, protesting against repeated power failures, blocked traffic with burning rubber tires in three districts of Beirut.

Later Lebanese army patrols dispersed them and no casualties were reported. But Lebanese security forces arrested 11 of those involved in the riots at the scene, who were referred to the Military Tribunal on Tuesday.

The security source also claimed that all the 11 suspects were members of either Hezbollah or the Amal Movement.The security source said that all army units and security forces north of the Litani river have been placed at the highest alert level and will intensify security measures, especially in the capital.

"From noon on Wednesday, strict security measures are being taken within the capital and around U.S. and European diplomatic missions and commercial interests," added the source.

In a statement Tuesday, power company Electricite du Liban (EDL) said power blackout was due to a malfunction at its Bastasub station.

Lebanon is currently facing the most serious deadlock since the end of the 1975-1990 civil war. For the first time in its history, the presidential seat has been void since Nov. 24 of 2007 when former president Emile Lahoud stepped down.

The two conflicting political camps have agreed in principle to elect Army Commander Gen. Michel Suleiman to replace Lahoud, but are still divided on how to amend the constitution to allow for his election, as well as on the shape and policies of the future government.

A long-awaited parliamentary session to elect president was postponed on Sunday for a 13th time, from Jan. 21 to Feb. 11.

The presidency deadlock deepened the Lebanese political crisis as fears are mounting that failure in reaching a deal on the presidential candidate could result more violence in the country. -Agencies