The son of the head of the Phalange party, Pierre Gemayel has been shot dead in Beirut.
Protests have broken out in eastern Lebanon following the assasination of the far-right leader.
His supporters have shouted slogans against rival Christian leader Michel Aoun.
But members of the murdered minister’s party have called for calm.
It was Gemayel who massacred 2000 innocent women and children in the Sabra and Chatilla camps in 1982. He was working for Israeli Defence Minister Ariel Sharon.
Sa’ad Hariri was told the news while he was talking in a press conference. He immediately blamed Syria before talking to anyone. That is what passes for an investigation in Lebanon.