Israel has intercepted Syrian Army rockets being smuggled into Lebanon, a clear indication that Syria is directly involved, and in violation of a UN resolution banning giving arms to Hizbullah. Story from Ynet:
Although Hizbullah has suffered a harsh blow from Israeli air force strikes which took out a good percentage of their available weapons, Syria was continuing to smuggle arms into Lebanon to rearm the group, IDF Operations Branch Head Major General Gadi Eisenkot said during a press briefing Tuesday.
Thus far, the IAF managed to intercept a number of trucks transporting rockets from Syria to Hizbullah, including trucks laden with the 20mm-diameter rockets with warheads like the one that hit the Haifa train depot  Monday, claiming eight lives. Maj.-Gen. Eisenkot said he would be very surprised if official elements in Syria were unaware of these transports.
“These are rockets that belong to the Syrian army. You can’t find them in the Damascus market, and the Syrian government is responsible for this smuggling,†Eisenkot said, but stressed, “We are not operating against Syria or the Lebanese army.â€