"We have had no report of any such attack anywhere in Lebanon, yet," a police official said. He spoke on condition of anonymity.
The rumors were sparked by the presence of a flotilla of U.S. warships off Lebanon. Some Lebanese politicians and news media said the warship were ordered into the area to put pressure on groups holding foreign hostages. Two of those groups have threatened to kill their captives in response to an attack.
In Washington, sources speaking on condition of anonymity said no attack on Lebanon was planned.
The Reagan administration announced the aircraft carrier USS Kennedy would begin a port call in Israel on Friday and that four of the Kennedy's escort warships had been ordered to sail for home.
The Washington sources said one of two Marine amphibious groups now in the Mediterranean soon would also be allowed to head home.
"We're dropping back a bit because our presence there is being blown out of proportion with rumors of invasions," one U.S. official said.
The naval buildup occurred after the abduction of three Americans and an Indian in Moslem west Beirut late last month and Waite's disappearance.