Rob Schmitz

He said their identities are known but could not be revealed due to ongoing investigations.

And he said the pair has already left Poland, crossing the border into Russian ally Belarus.

Rob Schmitz, NPR News, Berlin.

Polish Security Services Ministry spokesman Jacek Dobrzynski called the acts a terrorist attack and said they were initiated by, quote, special services from the east.

In other words, Russia.

The first incident, which damaged a section of track, happened between Warsaw and Lublin on a rail line crucial for delivering aid to Ukraine.

Investigators are looking into the second incident along the same line.

Poland's interior minister confirmed the use of explosives to damage the track.

A local resident said he had heard an explosion the previous evening.

No one was injured in either incident.

Rob Schmitz, NPR News, Berlin.

Over the weekend, Israel allowed a search and rescue team from Egypt to enter Gaza to search for the bodies of the 13 remaining hostages.

According to an official who spoke to NPR but not authorized to speak publicly about the matter, Israel also allowed members of Hamas to cross the so-called Yellow Line into Israeli-held territory,

to assist in the search for the deceased hostages.

Gaza's civil defense reports that Israel's military struck a group of Palestinian civilians who had returned to their homes near Khan Yunis in southern Gaza, killing two and injuring three.

Over the weekend, Israel's military said it carried out a targeted strike in central Gaza on a member of the Islamic Jihad militant group, injuring four people in a car.

Both attacks appear to be testing the U.S.-brokered ceasefire agreement.

Rob Schmitz, NPR News, Tel Aviv.

The Egyptian team, which specializes in search and rescue operations and in dismantling explosive devices, entered the strip accompanied by several engineering vehicles to help locate the bodies of deceased Israeli hostages.

Their bodies are believed to be in areas that have been booby-trapped.