Israeli aircraft destroyed four smuggling tunnels under the border between the Gaza Strip and Egypt today in the first air strike in almost two months.
Residents of the Gaza border town of Rafah said there were no casualties.
An Israeli army spokesman said the air strike was launched after a rocket that was fired into Israel from the Gaza Strip yesterday landed on open land.
Militant rocket fire has dropped significantly since Egypt began efforts to consolidate the January 18th truce that ended Israel's 22-day offensive against Gaza's Islamic militants.
In early March, an Israeli missile killed a Palestinian militant and wounded another as they were preparing to launch a rocket, Israel said. Both were members of Islamic Jihad.
Israel launched its war on the territory controlled by Hamas in late December, with the aim of halting cross-border rocket and mortar attacks by armed militant groups.
A Palestinian human rights organisation says 1,417 people were killed, of whom 926 were civilians. The Israeli military says the death toll was 1,166 of whom 295 were civilians.
Earlier, it was revealed the United Nations has asked Israel to freeze the planned demolition of Arab homes in east Jerusalem. Israel annexed the area m after capturing it in the 1967 Mideast War and expropriated one-third of the annexed land to build housing for 195,000 Israelis.
The UN Office for the Coordination of Humanitarian Affairs said in a report published today that only 13 per cent of east Jerusalem is now zoned for Palestinian construction. An estimated 1,500 residents of east Jerusalem's Silwan neighbourhood are facing eviction where 88 Arab homes are under Israeli demolition orders.
Palestinians say the planned demolitions are aimed at forcing them out of east Jerusalem. Israel considers Jerusalem to be its capital while Palestinians want to make east Jerusalem the capital of their future state.
If the demolition orders are carried out it would represent one of the largest forced evictions since Israel occupied mostly Arab east Jerusalem.
Twenty-eight per cent of Palestinian homes are built in violation of Israeli zoning restrictions and face possible demolition. The UN report says about 1,500 demolition orders are currently pending.