|The blast is the latest in a string of attacks |
blamed on Syria and their proxies [AFP]
Zeina Khodr, Al Jazeera's correspondent in Beirut, said on Thursday, that the March 14 bloc was preparing to issue a statement blaming Syria.
The bloc announced that Ghanem's funeral would be held on Friday. A general strike has been called on Thursday.
The education ministry said all schools and universities will remain closed on Thursday and Friday.
Fearing for his life, Ghanem had fled into exile following the assassination in June of another anti-Syrian, and only returned to Lebanon on Sunday.
Ghanem was the eighth member of the anti-Syrian majority to be assassinated since the murder of Rafiq al-Hariri, the former prime minister killed by a car bomb in early 2005.
Ghanem's death has reduced the bloc's majority in parliament to 68 members out of the now 127-member house, with numbers set to play a key role in the presidential vote later this month to replace Emile Lahoud, the current pro-Syrian head of state.
"This is an attack aimed at sabotaging all efforts to reach a solution to the current political crisis," Butros Harb, an MP and presidential candidate, said.
"You cannot separate this killing from the presidential election."
The killing comes three months after Walid Eido, another March 14 MP, died in a bomb blast in central Beirut.
Wael Abu Faour, a Druze MP, said: "Syria wants to prevent the majority from remaining a majority by assassinating its members.
"Syria wants to prevent the majority from electing a president from among its ranks."
Nayla Moawad, the Lebanese minister of social affairs, told Al Jazeera: "It is clearly an attempt to diminish the number of members of parliament from the majority and of the March 14 Forces.
"It proves that there is a mainstream, led by Iran and Syria, against Lebanese sovereignty.
"It is the end of any dialogue. We will not dialogue with murderers and we will not dialogue on the blood of our martyrs."