JERUSALEM (Reuters) -- Palestinian fighters held fire overnight Thursday and Israel refrained from airstrikes as an informal truce brokered by Egypt appeared to take hold following two days of violence along the Israel-Gaza border.

Palestinians had launched dozens of rockets into Israel over the preceding two days and Israel conducted a number of air raids on the coastal enclave, raising fears of a prolonged, bloody confrontation between the two sides.

An Israeli military spokeswoman said the last known rocket was fired from Gaza on Wednesday at 8:00 p.m.

An Israeli official said no formal agreement had been reached with Hamas, although Egyptian officials had been instrumental in restoring calm.

"The Egyptians have a very impressive ability to articulate to (Hamas) that its primary interest is not to attack and use terror against Israel or other targets," Israeli official Amos Gilad told Army Radio.

But he added that there was no direct agreement with the Islamist faction which refuses to recognize Israel and calls for its destruction.

"It can be said categorically that there is no agreement with Hamas, there has never been and there will never be. ... The only thing that has been set and said is that there will be calm. We are not interested in an escalation," Gilad added.

On Wednesday, Israel killed a Hamas militant in an airstrike which it said was intended to stop rocket launches. On Tuesday, Israel killed three Hamas men, saying they had either launched attacks or were about to do so.

In southern Israel, three agricultural workers were wounded when a Palestinian rocket exploded near them Wednesday.

An Israeli military spokeswoman said 86 projectiles had been fired at Israel between Tuesday and Wednesday and that the Iron Dome system had intercepted eight of them. Several homes had been damaged by Palestinian rockets.