Israel's defence minister Moshe Ya'alon said the Syrian crisis has "spilled over" to Lebanon because of Hezbollah's involvement in the war.
Mr Yaalon said: "The Syrian civil war has long spilled over into Lebanon as a result of Hezbollah involvement in Syria fighting.
"We see inside Lebanon, in Tripoli, Sidon and also in Beirut, from reports today of a car bomb that exploded there".
"We are not dealing with this and not intervening in it".
More top news
Benedict Cumberbatch heads up a group of all-star actors who have shot short films in defence of the Act.
A modified version of the herpes virus has proved a major success in phase III clinical trials.
The WWF reports that these new species were all found in 2014 - but that human development is already threatening many of them.