A short while later, news agencies reported that the Lebanese army and UNIFIL soldiers had found wooden launch pads used to fire rockets at Israel.
Also Saturday, a Lebanese news site reported that residents of southern Lebanon received threatening phone calls from Israel following the Katyusha fire.
'Lebanon Now' reports that the speaker in the phone calls said the Lebanese government would be held responsible for the fire as it had sovereignty over all of Lebanon's territories.
This is not the first time residents of Lebanon have reported receiving phone calls from Israel. In January, during the IDF's Operation Cast Lead in Gaza, residents said a voice on the phone had warned them against cooperating with Palestinian terror organizations.
IDF officials said the Katyusha fire Friday had probably been a single incident and that it did not mean Hezbollah meant to begin attacking Israel on a regular basis. A number of rockets have been fired at Israel since the end of the Second Lebanon War.
Ynet's security commentator, Ron Ben-Yishai, says the rocket fire may be a product of tension between the anti-Syrian bloc and Hezbollah in Lebanon, due to the establishment of the new government in the country. He says that most likely the rockets were fired by members of a Palestinian organization.