Troops tracked down and killed two Arab guerrillas who attacked an Israeli truck with a hand grenade and wounded its driver Wednesday, Israel radio said.

It was the second day in a row Arab guerrillas from Lebanon have clashed with soldiers inside Israel. The new attack occurred about two miles from Tuesday's border clash, in which two Israeli soldiers and three Palestinian guerrillas were killed, military sources said.It was not immediately clear if the guerrillas infiltrated Israel Wednesday or came with the group that entered from Lebanon Tuesday.

The army closed roads in northern Israel and ordered women and children in the dozen settlements north of Kiryat Shmona to stay indoors while troops searched for the guerrillas by foot and helicopter, police in northern Israel said.

The guerrillas evaded troops for three hours until they were discovered and killed in a nearby dry riverbed, said military sources who spoke on condition of anonymity.

It was the 12th penetration or infiltration attempt since Nov. 26.