BEIRUT - The Lebanese army denied as false Israeli reports that two rockets were fired early Tuesday from Lebanon into northern Israel.

'The reports are false, there were no rockets fired from Lebanon today,' a Lebanese army spokesman said, adding that 'there were conflicting news coming from Israel as well.'

Israeli police said that two 107-millimetre Katyusha rockets slammed into northern Israel from Lebanon overnight, but the Israeli army at one point said the explosions were from old rockets fired during the 33-day 2006 war between Israel and the Shiite militant group Hezbollah, the source said.

The UN peacekeeping force in southern Lebanon (UNIFIL), which is monitoring the ceasefire between the two sides, said its specialists were examining the incident.

'UNIFIL is in the process of ascertaining the facts. We have our team on the ground. In the meantime, we cannot confirm or deny this report,' UN spokeswoman Yasmina Buziane said.

According to Israeli police spokesman Micky Rosenfeld, the rockets left a mark on the ground, but caused no injuries.

A military spokeswoman in Tel Aviv said the rockets struck the northern Israeli town of Shlomi, on the border with Lebanon and caused slight damage.

A Lebanese army expert who requested anonymity said 'some extremists factions were trying to destabilize the southern Lebanon area which is now under the Lebanese army control along the UNIFIL.'

A Hezbollah source denied launching any rockets from southern Lebanon into northern Israel. The source refused to elaborate and there was no official statement from the Shiite militant movement.

Israeli Defence Minister Ehud Barak described the rocket attack as 'grave' but said Israel did not plan on changing the status quo in the area.

'We will study what happened, will think, will decide, and what needs to be done, will be done,' he said while on a tour of the area following the attack.

Hezbollah launched nearly 4,000 Katyusha rockets at northern Israel during 33 days of combat in the summer of 2006, but the Lebanese radical Shiite movement stopped after a ceasefire took effect on August 14 of that year. -DPA