A top Hamas leader and at least five others were killed in a strike in Beirut on Tuesday, a Hamas official said.

The leader, identified by the official as Saleh Arouri, was second in command in Hamas and the head of Hamas in the West Bank.

Lebanese Security Services said six people were killed in the strike, which Hamas blamed on Israel.

ABC News did not immediately receive a response from Israeli officials on the incident.

The head of Hamas' political bureau, Ismail Haniyeh, said Tuesday the militant group has sent its conditions for a truce to Egypt and Qatar.

In a statement, Haniyeh said the position "is based on a comprehensive cessation of aggression against our people."

Maersk, one of the largest shipping companies in the world, has decided to pause all transit through the Red Sea "until further notice," the company said Tuesday morning.

The company made the announcement in the wake of an attack on its vessel Maersk Hangzhou by small boats carrying Houthi militants on Sunday.

U.S. Navy helicopters returned fire and sank three of the four small boats, killing the crews, U.S. officials said. The fourth boat fled the area.

Sunday's incident was the second time in 24 hours that the Hangzhou had issued a distress call, U.S. Navy officials said.

Houthi leaders have said they will not stop the Red Sea attacks until Israel ceases its assault in Gaza.

Some communities in southern Israel near the Gaza border will be able to return soon, Israeli Minister of Defense Yoav Gallant said Monday.

"In accordance with the recommendations given by the IDF and the defense establishment, we will soon be able to return [displaced] communities home, in areas within a range of four to seven kilometers north of the Gaza Strip," Gallant said during an operational situation assessment held in Kibbutz Dorot.

Gallant said the "gradual return" will start with communities within seven kilometers, before moving on to the remaining communities.

Earlier Monday, Gallant toured the kibbutz and discussed the security measures required for the return of its residents.

-ABC News' Will Gretsky